>>16250235/pw/ as a board has always been really fast for the subject matter and it's slowed down to a really consistent point.
Look at other promotions outside of WWE and AEW and they get mainly one gamethread, possibly two if it's a super big event.
Even collision/rampage can go down to 2-3 gamethreads because simply there's less people who care for the supplimentary wrestling shows (its the same as Smackdown in the first half of the 10s getting less posts and activity becauee it wasn't live and was just Raw-lite).
The shitposters aren't the problem, /pw/ has always been a board that leans heavily on shitposting, jokes and works. The problem is that people take this shit too seriously. They have worked themselves into a shoot and carry grudges from thread to thread and make up their own identities or assign them.
/pw/ wouldn't be good as a full-discussion board, it would be quite honestly boring to browse because most of the userbase do not care.