It is preaching to the choir, of course- it’s meant to inflame and enrage the choir against all the conspiracies and boogeyman they already believe in to an extent.

It’s the same way attack ads during political campaigns work - they’re not targeting undecideds, negative ads turn off undecideds. The target audience are the people who would already be voting for you - it’s a way to inflame their passions so they’ll actually go out and vote on E-day.

I agree with the rest of your post.