It really does sometimes amaze me, even as commonly as it's visible, the extraordinary lengths some of them will go to in order to argue their outrage.
The other type, which is far less entertaining, are the ones who just hit-n-run with nothing other than an insult when they've lost an argument.
Hell, I had one on DI last night respond to every question I presented to him with a number... all the way to 13. "Grateful Dead" actually considered that creative in some mysterious way.
I suppose at least this one is digging his heels in with an argument, no matter how detached from reality it may be... that makes it far more entertaining.
And as usually, the one presenting actual facts and answers eventually throws his hands up in dismay. You can't teach these people anything, and trying is nothing short of futile.