It’s not just about facts: Democrats and Republicans have sharply different attitudes about removing misinformation from social media::One person’s content moderation is another’s censorship when it comes to Democrats’ and Republicans’ views on handling misinformation.
It’s different because the company built and maintains the space. Same goes for a concert hall, a pub, etc…
Nobody believes that someone being thrown out of a pub for spouting Nazistic hate speech is their “free speech being trampled”. Why should it be any different if it’s a website?
You rarely see the discussion, because there’s rarely a good argument here. It boils down to “it’s a big website, so I should be allowed to post whatever I want there”, which makes little to no sense and opens up a massive quagmire of legal issues.