I don't feel bad for the game developer. Its business model is to publish simple classic games, but with ads.
Can you explains what's wrong with this?
You are aware that some people enjoy playing simple classic games? You are aware that some people don't like or can't even use credit card online right? What's the solution do you bring that allow theses peoples to have entertainment? Are you going to bring them their simple classic games that they want for free? Why aren't you already doing it?
No one force you to play theses games, but in a weird way you enjoy seeing people losing a great source of entertainment. That's kind of worrying.