"Maybe if the right were to decide to be reality based, the left would stop dismissing them."
Declaring Trump and his tens of millions of supporters "illegitimate" based on your ridiculously contrived three presumed standards of reality is your prerogative, I suppose, but yours are the kind of dismissive delusions that have made Trump a political force.
Leaving aside the fact that I'd wager most Trumpists believe in evolution (the religious right I suspect has not been as enthusiastic about him as most other "right" leaning demographics), to be blunt, your post sounds about as absurd as Marie Antoinette wishing away The Revolution as she's being strapped to the guillotine. "But you aren't based in reality!" she cries, "The world is ruled by Kings, you fools!"
Trump's supporters are here. Their movement is a revolution against your assumed (and completely subjective) standards of reality. You can mock and dismiss them if you like, content in your childishly smug sense of intellectual and moral superiority, but this will not make them go away - quite the contrary, it will only buttress their convictions all the more. You can resort to violence, as some of your ilk have been doing at Trump's rallies, but before going that route I urge you to consider which side has more guns. Or you can deal with them as fellow members of the Great Political Experiment, engage them in the political process, and hope that their anger blows over before they do too much damage.
The choice is yours.