I never really liked Twitter as a concept. It feels like it's built on an "old man yells at cloud" concept where people just shout their thoughts and nobody gains anything from it.
By comparison forums are there to foster discussions and communities. I thought Mastodon would be better but I spent 5 minutes and it's exactly the same nonsense.
I legitimately don't understand what they're hoping to gain from the AMA. Unless spez is going to start with "We were wrong, we're rolling back the changes" then there's nothing to be said. They ran over 3rd party apps that millions of their users use for no reason. This will be a total disaster.