Likewise, I am a member of several forums where debate and posts can get quite robust, and have never had a problem with posts being deleted, being given time out etc.
Here, on MacRumours, it seems we need to pussyfoot around a bit in terms of content and etiquette ..... and there are certain members who seem to take offence rather easily. I am sure that moderators hear from a few such sensitive souls quite a bit, and they do seem to get protected as a result. Interestingly some of the same, who have gotten me censured one way or another, have eventually been banned for their own bad behaviour.
On the other hand, I have also posted on the odd forum which is very partisan, where some moderators are very heavy handed in deleting posts, closing threads, timeouts and bans. Check out ThaiVisa for one.