[thinkingemote]

Prebunking and making people innoculated against misinformation would also lessen (if done correctly) the impact of legitimate political influencing, product advertising, fashion, entertainment and government propaganda in general.

"Don't believe the hype" is a dangerous message when those with power operate with hype.

And so instead of actual innoculation what is done is a kind of "believe our hype, don't believe theirs and don't try to work it out yourselves". This ends up with the political situation in the USA of polarised groups pointing at the other side and saying "they are brainwashed"