Nooo! By you not purchasing any games the entire itch.io website will collapse (massive amounts sarcasam). You got to understand that itch.io is following the payment handlers rules because they absolutely have to. Itch risks loosing this website if they don't follow the payment handlers rules. The payment handlers are the only reason why itch.io and the developer community (who makes paid games) can earn money. They are the entire backend of all the payments.
And I'm sorry if your 18+ games which you purchased gotten taken down. Maybe it might be a good time to reflect on those purchases of 18+ games and your life if you're having to complain that much over multiple posts. Maybe try to get in a real relationship with actual human beings and not art drawn by them.