There is currently no
block-themes tag. Would it be good to create one, or is it better use the combination of
block-editor, or simply
theme-development by itself?
Just my own thoughts:
How common of a topic does "block themes" need to be to warrant its own tag? But also,
adding it might depend on the future of WordPress: If block themes become commonplace, then making a new tag for block themes may not be necessary. In that case, I could see a
classic-themes tag becoming useful.
(I don't have enough rep to create a tag myself, though I wouldn't do it unless it made sense.)