My very first experience with Fediverse was having a few instances recommended to me as a "Twitter replacement", but being neurodivergent or odd on the main timeline (one of the most difficult things to explain to a Twitter refugee - I cannot think of any other social media that works this way) was seen as trolling, whereas posting a relatively universal trigger untagged was allowed. I was told, at one point, "this is not a Twitter replacement." This would continue to be my experience on most others, while people continued to call it a Twitter replacement.
Mastodon has identity issues, imho, like a sibling trying to differentiate themself through dangerous acts. A lot of instances welcome radical content and pretty much instantly succumb to a wave of people who have gotten kicked off of other sites. And everyone passive aggressively bitches about each other forever.