It's not even that, free speech is about the government, not private entities, it's about not being arrested for what you say, it has nothing to do with what private companies do on their platforms, they're free to do what they want and they're not limiting any free speech by doing so because they're not the government.

It's baffling how many people still don't understand that and go on crying about free speech related to private entities.

the constitution allows you

I thought the point of the constitution was that it confirms existing rights, not allows or forbids something. While the usual laws do allow or forbid.

Free speech in the web was really funny in the 00s, when moderators could partake in long discussions about it, and then just ban somebody for looking at them wrong (figuratively).