/qa/ is a closed book
the only direction it can go to is to being forgotten
the more time passes, the less remains of that “board culture”. The more people will move on. The fewer people there will be that remember anything of that board's “culture”. There will be no new people picking up on its “memes” “lingo” or “inside jokes”.
There is nothing to cling on. There was nothing of value to cling on at the end anyway. You can keep complaining about “nas“ shit, but it won't make people start posting the bald bearded crying man again. It will all just fade into obscurity. So stop lashing out, and find a real hobby