Comparing James Charles to sugar daddies is pretty silly. He lucked into his success, whereas generally speaking the sugar daddies worked for it, and are far more cutthroat as a result, and infinitely more powerful and (actually) influential. There's also the fact they have decades more experience in exploiting people, and never have to worry about social media blow back, because barely anyone knows who they are.
The real way to tell if someone's given in to their demands is to simply see if they're invited back. There's a practically inexhaustible supply of hot guys willing to do whatever they want, they don't need to play the long game with any of them.