This thread showcases the best and worst of pprune.
An interesting topic and video is posted, followed by commentary on a spectrum from the doom merchants to the ‘nothing to see here folks’; the know-nothings and the much worse know-a-little types.
Occasionally some erudite soul will turn up (eg. aa777888) and cast some actual knowledge and experience to those interested in the topic at hand; inevitably he/she is attacked by nit-picking pedants determined to win some personal pissing competition.
These forums are a bit like life - the trick is to find people worth listening to, and ignore the rest.