The average person doesn't care about federated social networks and the average dev or admin doesn't have the time outside of work to setup and maintain one for his or herself.
If this is true, this is the same as Facebook does.
And for this reason I can't bother checking Facebook any more. Can't see what's in that for twitter?
Facebook is not showing me the posts from people I know, but instead advertisement and "reactions" it thinks I may like. Which I give a utter fuck about.
It's just another one of those things which just makes me stop caring.
If twitter knows what best for them, they should definitely not copy this UX anti-pattern of overruling the users explicit choice (about whose posts they want to follow).
There were also reports that followers would be automatically unfollowed. They wouldn't hear from Scott for a while, so they'd check and realize he was no longer followed. Maybe they slipped and accidentally hit "Unfollow" while scrolling through their feed one day. Maybe it was a one-time glitch. Or maybe it wasn't.
While it's true that such things could easily be imaginary, it's also true that they easily could not be. The idea behind these pseudo-bans is to discourage undesirable users from using the platform, and they do happen on many platforms (can't speak definitively for Twitter).
For example, my HN account was intentionally slowed by YC for years. Each page load would take several seconds. When I asked politely if they could lift it after putting up with it for a couple of years, they confirmed it had been intentionally slowed, but couldn't tell why, and graciously agreed to lift the punishment, which I'm still grateful for. :)