Who and what is headliner? Did I miss something ?

Headliner is one of the biggest Jk fansites and is known for being a saesang (not sure if it’s true, but that’s wht ppl say). Some ppl say she even got into bts dorm in the passed, got into a flight with them and filmed them without permission, violated bighit rules for not taking pictures in certain occasions and some even say that jk himself said to the staff that he’s afraid of her. She’s older than the average fandom age (some say she’s 40 lol but I don’t think so…). Anyways, she posts really beautiful high quality pics, fancams and everything about jk so she’s very popular and she posted fancams of him on the loto concert yesterday and ppl are saying that jk looks visibly upset when he sees her filming and bla bla and she’s been replying to hate on twt all day long lol, it got to the point of death threats smh. Tbh I don’t think jk can spot anyone in particular from the stage and I watched the fancams and he looked ok. About all the speculations about her even if they are true ppl can’t be sending her death threats… that’s just NOT ok, just unfollow and stop supporting her. That’s it. Plus, if you think about it, being a fansite is basically being a stalker… how do you think all of them get the best pics, always know where they are and everything, but then again, violating bighit rules is also so NOT OK. This is just a big mess. The fandom goes wild, we have no idea if any of this is true and hate is everywhere and in every direction. So fucking tiring. That’s why you won’t catch me on Twitter lmfao 😂😂😂