He's crazy bro. I'm not saying that in the "lol look at Pat" sense, he is legitimately disturbed. He's mentally ill. Years of being fucked with and then buck broken and made to pay his "stalkers" 80K have damaged his mind.
He was already a narcissistic prick with a looser touch on reality than his own asshole, but something has snapped in his head.
I think it's a mix of main character narcissism and a self defense mechanism, he has to believe that constantly... being him... is achieving something.
It's fucking hilarious to watch him humiliate himself because he is a deeply unlikeable piece of shit, but Pat is also legitimately insane at this point.