You haven't spelled out that there ARE any definitive and prove "disabilities". In fact, no one, not even Mike, has proven that bug eyes are super common. So, is the question even pertinent? Or are you saying we need to consider the genetic possibilities on all pairings, eve normal x normal?
They aren't super common. I'd say i hear about them less than i do about kinking in super cinnies/bps.
EDIT: but ppl shoot for supers of them less than they do of super cinnies/bps, imo