Tucker has Histrionic Personality Disorder, similar to Kamala. She cackles, he giggles. I used to like him but he’s now a drag, a well known drag. Grotty. His gig as a saint calling out the sinners is a bore.
I think in tucker’s case the laughing (and the earnest staring he does) is calculated performance. I like carlson but there are aspects of him that put me off.