I'd argue that the guys in the chair 'optimizing' those vids might be the sleeper agemt you need to look out for. It is probably somewhat personal?

Really, I don't think you need to worry. A prevailing latent attitude in the comments is that the brain is somehow super malleable and subject to external control through some incantations. Like subliminal messaging, it will at most be moral panic that fades, and then people will act like they never believed in it.