If you go on Bluesky they will tell you. Lots of people saying that they feel isolated because there is no algorithm feeding engagement, and federation doesn't lend itself to finding your friends from Twitter easily without one of those migration tools people were using. Then another chunk describe Mastodon users as a "HOA" because someone told them to put a CW on something.
Home Owners Association (group that implements rules for homeowners in a neighborhood like what colour you can paint your house or what you can plant in the garden), and Content Warning