Haha, it's always amusing how people think that they can determine what value someone is allowed to place on their own body and privacy. I wouldn't be posting my ass on the internet for $100!
He's a cosplayer on Patreon, not an amateur pornstar on Onlyfans. The $100 is to support his cosplay efforts, pays for the print rewards you receive, plus access to lewd (not nude) content, and includes an hour of Skype time with him each month. I'm at the $40 level and love the content; I always want to see more, but I don't feel like I'm owed or deserving of anything more than what he says he'll share.