It's probably more antis, but why do you think bp wont have a good performance? Yg will make sure they will have a grand stage & a bunch of background dancers to make up for any lack of energy, which there wont be.
Not only will they perform one song (how much energy could you lose performing one song?), but their most inconsistent link (Jennie) will be going all out. Jennie has shown before that if she isn't in the mood, she wont be giving anything on stage even though she CAN dominate if she wants to. HOWEVER, if there is one thing Jennie will do, is go all out if it involves anything western. 2018-2019 Jennie got dragged for her lazy behavior on stage in concerts, but the second she got on stage on coachella, she went all out (even got too excited to overstage the other members). I dont think bp will lack stage present on VMA, certainly not with Jennie & Lisa being on their A game.