In this instance, I am comfortable objecting to a system where individuals will abuse for self gain, because their abuse (or even their non-abuse) endangers every other person in the park. There needs to be a zero tolerance policy for masks. I'm sorry, I understand your sentiment and would otherwise 100% agree with it, but this is a matter of public health. If you have a condition that does not allow you to wear a mask, you are not in a medical state to be at a theme park. And yes, call that discriminatory (on some level it is), but it isn't just personal risk, it's creating unnecessary, avoidable risk for others.