I see thread and posts telling us it's the best niche ever and others saying the sites don't pay.
Then others saying it's tough to shoot and others saying it's hard to shoot.
This is my take.
The content isn't hard to shoot, it's not profitable enough for pros to bother to learn the skills required to shoot it. It simply doesn't pay enough. Relying on real Exgf content is a mine field, under age, no 2257 and the risks involved. Plus looking at some of the galleries posted on here, good look with getting sued for music piracy.
So "Filler"content of what ever they can get for the price usually is all these sites have.