That's the way the Big Lie technique always works: those who fall for it can't retract under any circumstances because the shame factor is too big.  If they admitted they fell like rubes for the grossest, most obvious con in American history, their self-esteem wouldn't recover.  They'd wonder how they could have been so wrong; and if they were wrong about Trump, what else were they wrong about?  "Pretty much everything," whispers the tempter. So they slam the door.  Easier to knock back another shot of Fox than to pay attention to their own insight.

Brave and intelligent people go through such internal crises knowing they'll be stronger, maybe even wiser, for them.  But your average bloke (or blokess) can't handle it.  Once they check into in Trump's Hotel California, they can never leave.  Is anybody surprised that a preponderance of Trump's worshipful fans grew up on the Left Behind books?