I don't think it's about feeling some kind of superiority. I think it's important to keep telling each other this so we remember - this is who they are. They are not rational thinking individuals.
The reason being that we cannot waste any time or energy thinking they can be redeemed. All our energy needs to be spent on making sure we vote and everyone we know votes. Because they will be voting and voting Trump, and won't be changing their minds. And that vote is a threat to our freedoms and our democracy.