It's not just the worst. Its people that disagree with the current fad of "politically correctness." There were very few people that were sad to see most of those subs go, but those subs weren't well known.

The FPH was a response to the silly "body positive" movement that has been encouraging non-healthy behaviors. (The execution wasn't popular, but the idea of it is well supported)

Additionally: Another big reason for the migration is that the ban came out of nowhere. There was no interaction with the Admins, and there has been a threat that has been expressed by Pao. ["We're going to make it safe" (for who and what political adgenda has scared the users quite a bit)]