I think that ... given one specific topic, few people understand it while the vast majority is completely oblivious to its workings.
So they then hear someone who speaks like that, with a fast cadence and Andrew Tate's "Confidence" TM, and are inclined to think "yeah, the guy looks like he knows what he's talking about".
But for people who have minimal knowledge about the thing, it's evident that said person is just stupid.
It's literally a marketing funnel for corruption. Having Smart People™ at your "parties" adds a layer of legitimacy and social proof you wouldn't get if you were Bubba from Nowhere Town.
Some people will be attracted by the menu, some people won't realise what's happening until they see the video they're starring in.
It's seemed to me that he was a habitual/obsessive networker. Someone up-thread described it as an urge to collect smart/impressive people, with the advantage being as you described. I suspect if you took away his horrible other interests, he'd still have been extremely sociable. Maybe aspects of blackmail/control are near-inevitable at the conjunction of criminal behaviour and power?
Sociable if you’re dumb like prince Andrew. Steven pinker the Harvard professor thought him an idiot. Said he was inane and a fraud who could only respond with stupid adolescent comments. Maybe somd like that sort of person and think they are fun. No doubt lots do, the guy down the pub who’s a laugh. Appeals to similarly dumb folk.
So they then hear someone who speaks like that, with a fast cadence and Andrew Tate's "Confidence" TM, and are inclined to think "yeah, the guy looks like he knows what he's talking about".
But for people who have minimal knowledge about the thing, it's evident that said person is just stupid.