I don't think it would. There are some that enjoy kpop for the music but I don't think that's the majority, I think the fantasy of hot single idols sells and it sells well, parasocial relationships make a lot of money for companies, especially when you target a certain audience.
I think Kpop would still be popular but for different reasons, maybe visuals wouldn't get that much attention instead, more talented idols would get the attention they deserve and that'd be so cool.