I think this is generally right. We tend to focus on the one side of the slippery slope which is "descent into an Orwellian dystopia", but the other side of the logical extreme is what, that no matter what private companies aren't allowed to remove and censor certain things on their forums?

Like you said, if there were an app where 90% of the conversation was about child pornography, no one would cry "1984" if it's removed by Apple. So we're just having a conversation about where the line should be and if hate speech and planning insurrection should meet that standard, not beginning a rapid descent into thought control.