So, you're proving my point. They want us to feel like a natural cure is impossible. As in, a medical treatment. What we have is Raphael promising us safety through magic.
You'd only feel that way if you are unfamiliar with D&D to be honest. There are rarely any problems that are impossible to deal with. And we literally have the whole game to deal with this. And with the enormous number of narrative branches I really wouldn't worry about it that much...there are probably going to be five different ways to deal with this even after popping every tadpole you can get your hands on for power. Your companions might all leave you or force you to kill them, etc. but you'll probably be just fine.
