@engineer,
While this is all probably true, I think his deafness may well be part of this, too.
He's always held up as an example of how cochlear implants really can work great -- he's a radio guy for gosh sakes! -- but I've been interested in that and have gathered over the years that actually, his CIs are not that effective. Formerly an extremely social guy, he now much prefers to visit with people one-on-one or not at all. And he also has a "court reporter," which is what he calls a real-time captionist. That is, he doesn't hear the people who call into the show, but has someone who types what is being said, and then responds to that.
I did a deep dive on this about a year ago, cites on request.