Yes, but that would remove characters from the title page, too. People may want to keep that, but not have them in tags.
This excludes characters from tags while keeping them on the title page:
Code:
[archiveofourown.org]
include_subject_tags: extratags, genre, category, ships, lastupdate, status
But nether does anything for the 'extra tags' Amalthia mentions.
Currently, FFDL puts all of AO3's 'freeformtags' and 'ao3categories' in genre as well as the site specific metadata lists. I'm beginning to think that may be a mistake.