I alluded to this yesterday, as well, but I had a “discussion” with him quite awhile ago now that spanned two days, mostly covering the underlying racism and xenophobia in his treatment of City, PSG, FFP, and his musings about the state of football in general. It also briefly touched on his favouritism for American-owned clubs (whilst ignoring the deep seeded financial and ethical issues with them), as well as his flawed understanding of financial management and analysis in general.
He conceded absolutely nothing and every response was similar to what you have described in spirit; it was very much the intellectual coward’s escape of “you don’t understand what I am saying” and “I know more than you so am always going to be right about this”.
Funny enough, shortly after I fully disclosed my credentials (as a basis for dissolving that “I know more about this” defence) he ceased responding to me.
He’s a charlatan, a malcontent, and an idiot.