I don't think zero-moderation is possible, at a minimum you'll have to ban bots and spam. The larger problem is concentration of communities in 3-4 big provider

I don't think zero-moderation is possible, at a minimum you'll have to ban bots and spam. The larger problem is concentration of communities in 3-4 big providers, there was heavy moderation before, but it was easy to move to a different community if you didn't like it.