You are correct, they absolutely refuse to discuss or debate most issues based on the facts. To be fair, they don't usually know the facts, so they can't argue about what they don't know.
And don't forget 'Godwin's Law' that hold any argument / discussion that goes on long enough will result in one side or the other (sometimes both, I suppose) being compared to Nazis or Hitler. It's the same concept here, except they start in on it as soon as they can. Even if they don't play that card at first, you know it's coming. They'll get around to calling you a racist, eventually. Even for saying nothing more than all lives matter. I guess Mother Teresa would be cancelled by current standards, and called a racist now too, since she seemed to care about everyone.