Honestly, they're called fandom jokes. As a Shawol of four years, I've lived four years of my life seeing Dibidibidis, Onew Condition, Onew loves chicken, Minho's tall/Jonghyun's flippin short, Taemin with his mushroom hair, not much bout Key cuz he untouchable lol, jokes everywhere, all the time. None of us are complaining because these are jokes people will use, especially if they're new to the fandom and haven't had the chance to laugh at them yet like we have, and BTS is a huge group that's getting new fans every day! Even fans that haven't heard of K-Pop! Of course those jokes will always be used, at least right now, because there's a constant stream of people that've never heard them before that find them hilarious. If they do, don't hassle them for their fun just because you're over it already. The internet loves to ruin others' fun. You say these fans are basically poison to the fandom, but, if you ask me, it's people like those that hate them using jokes that are rude and causing unneeded conflict within the fandom. Deal with the fact these jokes are still a thing because Bangtan's still a group that's constantly growing and gaining new fans.