Social media is considered a public space, even when it isn’t.

Like when people claim their right to free speech was denied because a privately-owned website banned them. They seem to think that if a platform allows them to speak publically, it's the same as saying something out in a public street.

In reality, it's more like being in a venue with an open mic - it's a private (and likely commercial) space by default. If you go up on stage and say something the owners or managers don't like, you absolutely can be kicked out for it. Private websites, including social media, are the same way.