His point is valid though. If the cut off is 100 lbs and allow for 1 lbs more, then it really is is 101 lbs. Someone weighing 102 would still be fired and so on.

Maybe older people have more problem keeping weight off (evolution) so this is also a way to keep them fit and young. I get the BMI thing not being accurate but then, maybe they don't want "big-boned" or muscular women there.