That's not a left or right issue - it's simply a fact of life.

Example: you are free to verbally shit all over your boss and company in public; just don't expect to work there for much longer.

Another example: you are free to call the 1.93m thug who bumped into you a blind idiot, just don't expect to face no physical consequences for exercising your right to give him a piece of your mind.

It's funny how some people try and make this a political issue when it's really not and never has been.

So being banned off Twitter is a consequence for your free speech, right?

If a company decides you violated their ToS and consequently doesn't want you on their platform anymore - then yes. They didn't involve the government to take away your civil rights or punish you and you are free to join a different platform.

It's like being banned from the regulars' table for constantly being a nuisance and then complaining to the bartender that your former buddies don't want you at their table anymore.

The audience can respond any way they like without infringing on the speaker's rights or breaking any laws. It's not a right to work at SpaceX and it's not illegal to fire employees with cause.

It's not a right to have a twitter account and it's not illegal to ban a user with or without cause.