sometimes i legitimately wonder if overwork stress from studying and high expectations leads to whores.
No. There can be some rebellion aspects to it, but the studying was from social/family expectation. The whoring is for attention because reality will set in that they're not in the 5% of Women that are actually competitive with Men in advanced aspects. Whoring doesn't really start until Women are outside of family structure. This is why most IRL ones have "daddy issues", as they lacked the structure their entire upbringing.
It's important to realize just how much BS "You Go Girl" they fill the heads of girls with. When, frankly, they can't. They hit their upper limits very quickly and reality hits them in the face, so they have existential crisis over the now deep dissonance of reality setting in. People needs to be exposed to reality pretty young. It doesn't need to be the brutal, dark stuff, but if someone grows up with ever interacting with the realities of life they have a tendency to flame out pretty hard.
For most that we see in the Vtuber space, they'd never make more money doing something else because their skills aren't unique or not easily replaced. And, to make matters worse, they've finally got the attention they always wanted. With only a couple of exceptions, most Women in Vtubing are there because they're a 7 on a good day or have social anxiety. They can't compete against what they compare themselves to, but, with a Vtuber model, they can. Which is why the tits keep getting bigger. (Side point: Women actually talk about breasts more than Men do, as strange as that is.)