My understanding is… Being popular (a.k.a. having lots of subscribers) requires someone to be entertaining and be good at self-promotion. Being entertaining is independent from being a good person. For the latter, I once saw a streamer say something along the lines that anyone who is willing to do that level of self-promotion likely self-selects for at least some level of narcissistic traits

… and a lot of their subscribers are relatively young and likely don’t care, probably