Getting treated for cancer, for example, effectively bars you from flying. There are lots of medical things like this.
If these things are that bad, those same people shoudn't be driving either. And this is probably true. However, if you applied these same restrictions to driving, people would absolutely go nuts on you.
No, that is not true. I got treated for cancer two years ago (surgery and radiation), it was contained (not metastatic), I have twice since passed a Class 2 Medical. I talked to my Aeromedical Examiner, I talked with my treating doctors, they talked to each other, it worked out -- so far.
If these things are that bad, those same people shoudn't be driving either. And this is probably true. However, if you applied these same restrictions to driving, people would absolutely go nuts on you.