I wish Twitter would give Jack Dorsey's idea a chance--just make the censorship optional. If you want Twitter to be the wild west--you've got it! Just disable the little 'safe-space' toggle and anything goes. You'll have to mentally filter out the fake news, racism, and [foo]-phobia. If you want Twitter to be a safe space--you've got it! Just enable that 'safe-space' toggle, and Big Brother Jack will make all the nasty people go away.
Yes. I think he understood that censorship beyond what is strictly required by law would be the end of Twitter as an omnibus-platform, and thus the end of Twitter.
In the same way that we have newspapers split by political observation, we will end up with social media split. In a way it is natural.