That only works on people who think emotionally, and can't think rationally.To be fair they've been told for years - by people with a terrible track record for honesty - that the other side is evil, racist, misogynistic, homo and transphobic, hates immigrants and wants poor people to starve.
So the rock and the hard place is very real for them. It must be a terrible way to live.
Oh, that was your point, wasn't it?