We're not the ones who are going to mimic him. His audience will use his words to rationalize their own bigotry. We need to pay attention to him because his audience will make themselves a problem.
His meltdowns would be entertaining if they weren’t incredibly sad. I’m bipolar and have been in a manic state that would be deemed as detached from reality (usually just racing thoughts and insomnia; this one included delusions of persecution). He needs people in his life who can steer him towards help during these times and clearly has none or doesn’t listen to them.
You just know that whenever anyone says, "I can’t be antisemitic/racist/etc because" they are are about to say some ignorant shit that counters the first half of the sentence.
"because" is even worse than "but". At least the guy saying "but" is acknowledging that the statements conflict and the same rule applies to everyone, even if they're negating their first statement.