I'm not talking about just bumbping old threads, because as you said there's no rule against it and I indeed find it to be appropiate to keep a discussion that was fueled again thanks to a recent event or new information.
But the cases I'm referring to are these:
Thread without activitiy since november is bumped today by an user who just wants to mock its content:
Same user bumps another thread without activity for a month just to mock an user:
Once again, the same user bumping a thread because of some childish feud with another guy:
Thread without activity since august and this user finds it appropiate to bump it with just a "lol" because it failed to predict a match up involving, of course, Zoro:
Same user bumping an old thread just to laugh at it:
Another one, more than half a year after losign its activity, this same user just bumps it to humiliate the thread:
And all of these belong to the current first page of the Manga section, I don't even want to look in the second one. This isn't sane activity, this is toxicity coming form certain users who "happen to be" Zoro fans who are just making junk posts with the sole purpose of adding fuel to feuds that tarnish the whole forum (since it doesn't matter the thread, you will end up finding some form of Zoro vs Sanji that turns it into a dumpster).
I will start to report these posts, certainly, but I'd appreciate some feedback on this issue from the mods because I personally don't find it acceptable in a forum that is supposed to be a sane place of conversation about a common hobby.