How is tag quality evaluated by the tag picker or audit command? That is one of the most annoying aspects to keep track of for me, and it seems like this tool does not address that at all.
I'm not sure what you mean? It simply lists existing tags from all my blog posts, so they've already got my seal of approval as I've used them before. I could add "number of times used", but I've not needed it. It's not synthesizing or hallucinating new tags from content. If I want a new tag, well, I think it up myself, though after many years of blogging it's not a common occurrence.
I see. In my blogging experience it is easy to accidentally create tags that apply to just one article, or, perhaps worse, apply to such a broad range of articles that they don't have anything in common beyond the tag. Figuring that out for a large number of tags and a large number of articles is annoying to me!