So far I haven't done much browsing by tag, save photography (pretty related), and cryptocurrency (also not too much off topic).

A big offender IMHO is introduceyourself, too many people kep posting here as though it is a lifestyle tag.

The best case scenario is for better "weight" to be given to upvotes when they keep the topics well curated and perhaps add a "miscatagorized" flag that doesen't kill a post but could kill an erroneous tag.