It's highly unlikely that the entire PPR forum will be deleted. In general, mods don't delete threads (except spam and trolling threads). If it was deleted, thousands of threads and posts would be lost.
Some advice for you and all others who visit and post in PPR: if you can't handle PPR, the best thing to do is to just stop visiting it. True, the general atmosphere in PPR is quite unpleasant, but that won't change.
If someone replies to you in a thread disrespecting your opinion, the best thing to do is to just ignore their response. If they attack you, report their post and leave it to the mods to deal with them.
I'm a regular Wikipedia editor, and one main principle there is to comment only on content, not other editors. I think that would be a good principle for people here to follow. When posting in PPR, people should comment on the topic in question, not other users.