[seti0Cha]

That's not how shaming works. If you try to shame someone who doesn't think they've done anything wrong, which will be case in this hypothetical scenario, they will not feel shame. They'll just think you are wrong. If a mob of people engages in public shaming, you probably still won't make that person feel shame, but you can cause them to feel humiliated and isolated and so likely silence them, along with others who might have otherwise agreed with them publicly.

Shaming is a way of silencing people who disagree with you and that only works if you do it as a mob. Otherwise you're just making yourself feel good by expressing your disapproval. Mob shaming at least accomplishes something, individual shaming is just a lazy substitute for persuasion.