I literally wrote a comment about the exact same thing yesterday. Freedom of Speech in the US only means freedom from prosecution for what you said. It does not entitle you to a platform to say it. Social media giants can silence you for literally any reason. You don’t even have to break the rules. That doesn’t infringe on your freedom of speech as that is not what said freedom even means.

In regards to the original question: I’d say it’s a good heuristic to assume that every time someone anywhere makes an absolute claim that leaves no room for them being mistaken is a situation where it’s safe to assume they’re just expressing personal mood about that subject, not an objective truth. Absolute claims only need one counter example to come crashing down.