TWTR -- the publicly traded company -- dipped so badly that Musk needed to make it private. It's effectively less of a public commons now than it is Musk's investment on manipulating information.
Afaik, open nazi were actually silenced on twitter prior Musk. But, you could talking in euphemisms and it would be mostly fine. Also, when you went really really far with harassment.
Twitter -- the community -- is dead and rotting.