Yes, but those mechanisms evolved when shaming meant doing so in person to someone in front of a dozen other people in a hunter-gatherer society.

That same mechanism amplified by social media is no longer as adaptive. It's natural and fairly reasonable to snap at someone if they are rude to you. But if you jam a bullhorn in their face and yell into that, it's no longer appropriate. The emotion and impulse are the same, but the technology changes the manifestation of them.