He’s a former broadcaster.
Formally trained radio people develop a certain style that stays with them once they move on to more financially viable endeavors.
I wouldn’t listen for long to a radio host that sounded like Pence. Don’t get me wrong - I like Mike Pence, but he sounds boring and rehearsed and like a politician. Almost condescending.
He’s got the very staged hand gestures too. Unctious in style and words. Just come off as insincere. Like a traveling tent preacher.