Maybe I'm misunderstanding you but it seems like you are arguing for a fairly hard-line stance of: Facebook shouldn't be allowed to censor or take down any content, and all decisions to do this should be pushed down to individual users or group moderators.

This is certainly unworkable given the level of bots, spam, etc. that would be untenable for a volunteer moderator on a Facebook group, or an individual user, to deal with.

Maybe I am misunderstanding you and your point is more subtle: the government should have some rules around what Facebook can and cannot censor. Then I don't disagree with you in principle, I think we would have to get into specific proposals and weigh their pros and cons.

A blunt approach of "free speech, no censorship" isn't a convincing argument, but given the scale of impact that site-wide or nation-wide moderation decisions have on Facebook, I could be convinced that government oversight in certain cases makes sense.