No problem! It's kind of interesting that the "tags" don't seem to be publicly facing. They clearly exist because we can search for things like "music" and get relevant results back, but those tags don't seem to exist in any public-facing place.
I wish Itch put some effort into better ways for us to export and manage our library data.
You're welcome for the update, and thank you for putting my script to use and for the great suggestion!