There is a massive difference between Twitter banning accounts, and Twitter transparently editing accounts to harass someone else.

It would be like you posting a Twitter message that says "I hate Donald Trump" and Twitter transparently changing that message to "I hate Tim Cook" so that anybody reading your timeline thinks you're someone you aren't. See the problem now? Now imagine if Twitter's management was taken over tomorrow and this actually happens.

Would you not be a little bit outraged?

Well then maybe reddit should stop lying about what it stands for?

If it doesn't care about the principles of free speech (principles, not the amendment) then it should stop giving fake lip service to it.

Also, what you say isn't really true. 4chan does a good job of not censoring anything that isn't obviously illegal.

Any chat system built on top of the blockchain for that matter would actually be impossible to censor.

Or even just a simple email list, is in some sense an uncensored chat room.

Or text messages. Or phone calls.

All of these are in some sense, technology assisted chat services, run by private parties. And I'd describe them all as "bastions of free speech".

What if, to prevent harassment, your phone company listened to all of its customers phone calls and selective moderated them whenever you said a bad word? That is the equivalent.

Ok. How would you feel if Zuckerberg secretly edited your Facebook status, and swapped his name out with someone else's, because what you said about him was kind of mean?

I'm absolutely fine with it. It's Facebook, nothing of value.