When the Nazis walk into the bar you throw them out or everyone else leaves and then it's a Nazi bar.
What about the grocery store? Did you know that bad people use those as well?
Even going back to your bar example. I am sure that bad people go to bars all the time. And generally speaking, nobody gets kicked out, nor do people just leave.
You have your drink like everyone else.
To be fair though, I really haven't seen a change in the content on Twitter at all since Elon took over (modulo meta-discussion about Twitter itself). Time will tell I suppose