The body language of the Rabbi™ speaks volumes. He know exactly what they do and he condones it, so long as they're not caught by non-Jews doing it. If they are, it's an internal matter™ and not to be discussed with non-Jews. Dasting…. andnotable.
>Why do they all wear black and have the same hats if they are not a cult?
You forgot the "Group Think. Public shame against those who challenge" Part. Q didn't.