No, there's no difference between "has some of it" and "is full of it". Where could the line possibly be drawn between those two? Why should your values in particular control other people's speech? If you don't want to participate on a discussion because it's full of something you dislike, that's your call. But big tech companies have no business shutting down other people's legal conversations.
I think you guys agree. You are free to not participate. The point of contention is: are you free to deny others ability to participate if they want? (if you had that ability)
That's where idea of public platforms as infrastructure (and actual infrastructure like DNS and carriers) if coming from.
This reminds me of people wanting to ban or filter torrent protocol itself, instead of illegal content on it.