The problem is several-fold:

1. People really don't understand our intent/scope, and so we get both a lot of new users asking non-applicable questions, and also a lot of migrated questions that shouldn't be migrated here.
2. We get a lot of "drive-by" questions, by users who don't understand the WPSE MO, don't come back to accept answers, and who don't participate/contribute in other questions.
3. We get a lot of - quite frankly - incredibly poorly written questions, that are often nearly impossible to decipher. As a corollary, attempts to answer such questions get down-voted, which discourages such attempts.
4. A great deal of the WordPress user base demonstrates an everything-for-free mentality that is counter to the principles espoused by most advanced users/developers - principles such as RTM, consulting the Codex, and doing basic Google searches before asking others for help; understanding that code examples are examples, and not necessarily intended or suitable for direct/unmodified copy-pasta; etc. (Perhaps I'm jaded by spending so much time in the WPORG forums.)

How to work around these issues?

1. Continue to refine and improve our scope, and attempt to educate others in the SE universe regarding our desired scope.
2. More efforts to educate users who actually stick around; perhaps more extreme moderation of the "drive-by" questions.
3. More efforts to edit/improve questions - perhaps use the WPSE blog to help educate users regarding how to write questions that will solicit good answers.
4. I really don't know...

EDIT

I'm not trying to throw this specific user under the bus, but s/he exemplifies my exact points above: 9 questions, zero accepted answers, and three questions closed for being too localized, out-of-scope, and an exact duplicate.

I think, to attract more WordPress experts, we need to work to raise the level of incoming questions - and in order to raise the level of incoming questions, we need a concerted effort to train the WPSE users regarding how to ask better questions and regarding the WPSE MO, including accepting answers, helping to improve one another's questions and answers, searching before asking duplicate questions, etc.

The problem is several-fold:

1. People really don't understand our intent/scope, and so we get both a lot of new users asking non-applicable questions, and also a lot of migrated questions that shouldn't be migrated here.
2. We get a lot of "drive-by" questions, by users who don't understand the WPSE MO, don't come back to accept answers, and who don't participate/contribute in other questions.
3. We get a lot of - quite frankly - incredibly poorly written questions, that are often nearly impossible to decipher. As a corollary, attempts to answer such questions get down-voted, which discourages such attempts.
4. A great deal of the WordPress user base demonstrates an everything-for-free mentality that is counter to the principles espoused by most advanced users/developers - principles such as RTM, consulting the Codex, and doing basic Google searches before asking others for help; understanding that code examples are examples, and not necessarily intended or suitable for direct/unmodified copy-pasta; etc. (Perhaps I'm jaded by spending so much time in the WPORG forums.)

How to work around these issues?

1. Continue to refine and improve our scope, and attempt to educate others in the SE universe regarding our desired scope.
2. More efforts to educate users who actually stick around; perhaps more extreme moderation of the "drive-by" questions.
3. More efforts to edit/improve questions - perhaps use the WPSE blog to help educate users regarding how to write questions that will solicit good answers.
4. I really don't know...

EDIT

I'm not trying to throw this specific user under the bus, but s/he exemplifies my exact points above: 9 questions, zero accepted answers, and three questions closed for being too localized, out-of-scope, and an exact duplicate.

I think, to attract more WordPress experts, we need to work to raise the level of incoming questions - and in order to raise the level of incoming questions, we need a concerted effort to train the WPSE users regarding how to ask better questions and regarding the WPSE MO, including accepting answers, helping to improve one another's questions and answers, searching before asking duplicate questions, etc.

The problem is several-fold:

1. People really don't understand our intent/scope, and so we get both a lot of new users asking non-applicable questions, and also a lot of migrated questions that shouldn't be migrated here.
2. We get a lot of "drive-by" questions, by users who don't understand the WPSE MO, don't come back to accept answers, and who don't participate/contribute in other questions.
3. We get a lot of - quite frankly - incredibly poorly written questions, that are often nearly impossible to decipher. As a corollary, attempts to answer such questions get down-voted, which discourages such attempts.
4. A great deal of the WordPress user base demonstrates an everything-for-free mentality that is counter to the principles espoused by most advanced users/developers - principles such as RTM, consulting the Codex, and doing basic Google searches before asking others for help; understanding that code examples are examples, and not necessarily intended or suitable for direct/unmodified copy-pasta; etc. (Perhaps I'm jaded by spending so much time in the WPORG forums.)

How to work around these issues?

1. Continue to refine and improve our scope, and attempt to educate others in the SE universe regarding our desired scope.
2. More efforts to educate users who actually stick around; perhaps more extreme moderation of the "drive-by" questions.
3. More efforts to edit/improve questions - perhaps use the WPSE blog to help educate users regarding how to write questions that will solicit good answers.
4. I really don't know...

The problem is several-fold:

1. People really don't understand our intent/scope, and so we get both a lot of new users asking non-applicable questions, and also a lot of migrated questions that shouldn't be migrated here.
2. We get a lot of "drive-by" questions, by users who don't understand the WPSE MO, don't come back to accept answers, and who don't participate/contribute in other questions.
3. We get a lot of - quite frankly - incredibly poorly written questions, that are often nearly impossible to decipher. As a corollary, attempts to answer such questions get down-voted, which discourages such attempts.
4. A great deal of the WordPress user base demonstrates an everything-for-free mentality that is counter to the principles espoused by most advanced users/developers - principles such as RTM, consulting the Codex, and doing basic Google searches before asking others for help; understanding that code examples are examples, and not necessarily intended or suitable for direct/unmodified copy-pasta; etc. (Perhaps I'm jaded by spending so much time in the WPORG forums.)

How to work around these issues?

1. Continue to refine and improve our scope, and attempt to educate others in the SE universe regarding our desired scope.
2. More efforts to educate users who actually stick around; perhaps more extreme moderation of the "drive-by" questions.
3. More efforts to edit/improve questions - perhaps use the WPSE blog to help educate users regarding how to write questions that will solicit good answers.
4. I really don't know...

EDIT

I'm not trying to throw this specific user under the bus, but s/he exemplifies my exact points above: 9 questions, zero accepted answers, and three questions closed for being too localized, out-of-scope, and an exact duplicate.

I think, to attract more WordPress experts, we need to work to raise the level of incoming questions - and in order to raise the level of incoming questions, we need a concerted effort to train the WPSE users regarding how to ask better questions and regarding the WPSE MO, including accepting answers, helping to improve one another's questions and answers, searching before asking duplicate questions, etc.