Shunning happens with all society now, for less than this. Except it's called ghosting. Or "cutting off" of family members. It's shameful and no different, except we do it whenever we want, for whatever reason seems justified to us, without caring for the party we are doing it to. At least with Amish, everyone knows the rules.
We can't point at another section of society until we fix ourselves.
That is in no way the same as an entire community shunning you and cutting you off from all of your family and friends. That is not society shunning you. That's a person doing it.