Many of the worst posts are never seen by most users because Bob Phillips takes the time to monitor the forum and keep it clean. Being a forum moderator is a thankless job, but a very necessary one. Most of us have seen what an unmoderated forum can turn into. If that is what you want, there are alternative sites where you can go to get that.
The rules of this forum, and the purpose for those rules, have been clearly explained, both by Bob and in the Message Board Rules that everyone agreed to when they registered in this forum.
If you look at the posts that are still on the forum, you can see that Bob has not been overly strict in monitoring the posts. This forum can be fun without decaying into profanity and slander.