Why should CRT be so popular? Fragments here and there seem plausible at first glance, but as an overarching explanation it falls flat. As implemented it demands that people confess sins they haven't committed, and spread the "dysangelion" that your neighbor is also a fiend. There's no redemption for an individual.
Maybe we all know we're guilty of something, and this taps into the thirst Chesterton wrote of. Plus, this kind of confession is abstract enough to not sting much. And we can enlist others to force the sitting laughers to kneel and confess too.