Idiots cannot be taught. An idiot cannot be challenged or brought to clean water. Because the idiot is barred from reality by a thick layer of a slippery, disgusting smell of substance called demagogy. It scares the enemy. And it protects itself from it, crawling out of the seemingly chain of facts and logic.
Try to teach, expose or challenge! No matter how hard you try, no matter how hard you persevere, he cracks. You are just cheating.
Per that’s why those of us who are lucky enough to grow up don’t waste their time arguing, if, of course, it’s not a question of life and death.