I actually think you’re wrong. Having MAGA family members, I tuink they are legitimately brainwashed. They are in a bubble where they don’t hear the bad about Trump. They only hear good things about him and ad things about his enemies. Some of what they hear is true, much of it is lies, all of it is intended to scare.
I think that, had these people heard the same things the rest of us did, at least some of them would be voting differently. Not all, but enough.
Yes, my MAGA family members bought Trump’s line of “I don’t know who is involved in that”.