You completely missed the point of GP's comment. They never said Facebook can't do whatever they want. Just that Facebook employees shouldn't feel like they get a say in it.
edit: btw I'm not saying it is GP's opinion that Facebook can do whatever they want. I have no idea what GP thinks about that. I'm only saying their argument wasn't specifically about that.
For the 500 millionth time Section 230 does not say "censorship makes you a publisher". It says the exact opposite. An information service cannot be held liable for:
"any action voluntarily taken in good faith to restrict access to or availability of material that the provider or user considers to be obscene, lewd, lascivious, filthy, excessively violent, harassing, or otherwise objectionable, whether or not such material is constitutionally protected"
Translation: they can "censor" or moderate or remove spam to their heart's content, even beyond what's legally required.
Without the safe harbor, activists could flood 2A message boards with "guns evil, ban them all" spam and the mods could do nothing to stop them lest they lose Section 230 protections. Trolls could harass users on religious or parenting forums or support groups for cancer, grief, PTSD, or addiction. Practically any Internet message board would become unusable.
