In an individualist perspective, I agree with you, shunning won't cause society to collapse.
But when people advocating it to an aggressive level-extensively campaigning the rejection of a certain person at social scale, this is dangerous and smells like politics, and was exactly the way how hitler shunned the jews.
But when people advocating it to an aggressive level-extensively campaigning the rejection of a certain person at social scale, this is dangerous and smells like politics, and was exactly the way how hitler shunned the jews.