Hello all,
I got to this thread because I was looking to see if someone has already created the EU petition regarding this matter.
As @Nifflas said, this subject far surpasses either itch.io or Steam, this kind of attitude opens the door to major manipulation of what we can and cannot access with our money. Of course the pressure from zealots starts with adult content, but how much time will it take for them to come for atheist content, or socialist content? This overeach is a major attack on our freedom to use our money to support whatever we want to support, a payment processor should just process the money regardless of the object of the purchase (as long as it is legal obviously).
So, all that being said, if no one started this EU petition I am not only onboard, I can start the process myself and post the link here.
EDIT: Studying the situation, it seems what we need might be a Citizen initiative and not a petition, I'll search if some is already ongoing