In the context of US constitutional law, yes. But freedom of speech can have a wider meaning in moral philosophy. What someone might mean when they speak of the idea will vary.
Anyway, I don’t think anyone has an obligation to listen to or host content they find offensive or harmful, but in the context of a public forum that hosts a wide range of non-curated content and discourse, removing content or banning people just because it is critical of you or you disagree with it may be morally wrong. Especially when there are clearly outlined rules and the content does not clearly violate those rules. This happens frequently on this instance (and others, but this seems to be the main offender among the big instances currently).
That’ll always come down to the moderation team and their views of content, and it’ll always be a thing in online forums. I can still remember the, ahem, other place, and their mods on a power trip were legendary for stifling conversation points they disagreed with. Same thing happened on Digg before that.
They know this because they people crying about the first amendment and “cancel culture” are consistently the ones doing it to others.
Freedom of Speech != Obligation to Listen
I’ve been shown so many doors, you’d think I wouldn’t need to be shown anymore, but here we are.
It is worth remembering: any law reflects the moral right to free expression. There are limits - there are always limits - but you are correct to have some expectations of leeway, anywhere you go.
