I think it's mostly harmless and of course most kids will grow out of it. It's definitely like wanting to be a rockstar, but I think the scale is larger and the barrier to entry so much lower that they seem much more convinced it's actually a viable option than what I thought being a rockstar was when I was a kid.
My guess is for many of them it will be a second "wait, Santa isn't real?" moment when they get a bit older and realize that power law distributions are a thing and that's just how it is. Followed by fun times reminiscing about it with each other as adults.
In a way I find it a little sad, as a reminder humans keep getting more isolated with tech. Where 30 years ago we wanted people cheering us on, chanting our name, etc... people now seem to desire views, likes, and whatnot.
I'm not saying one is better than the other, it's just really hard for my brain to process as I don't understand it.