While I agree that a modicum of civility is required, PF goes over board. When pointing out the logical fallacy of my opponents argument a moderator gave me a warning for insulting them. When I engaged with the moderator and gave them a link to the fallacy that was utilized, the moderator got upset. From there, the moderator would follow all of my posts in a stalking manner and either use their position to either bully me on the boards or hand out arbitrary warnings and possible band. The administration would do nothing about it.
Many people are leaving PF because of this type of behaviour, and this it is evolving to an echo chamber not worth the time.