I would rather they didn't but the post I replied to was about one alternative to things - not any of the other alternatives, like federated systems (Mastodon, etc) or even something like IRC that I love dearly. They picked one of the things that is notorious for being full of white supremacists (and also banning people for being "left wing", as was my experience of disagreeing with a prominent Gab user, on Gab, for which my account was banned. So much for "freedom of speech".)