Man is not defiled by his impurities. It is the other man pointing out his impurities to him, whom he is defiled by. Is there anything anyone can do, to become righteous, anyway? God made us impure. If he had a problem with that, He would have made us gods, instead.
Again, as I had often met it in my own church, I was confronted with the Impurity of Women doctrine that seemed to preoccupy all clergymen.