Since I was an early "agree"er to
@Fantine 's "who is he?" post, I will tell you why I agreed with her "who is that guy" (and I thought about posting one myself until I noticed hers).
I've seen His name when I scroll past posts on social media citing him or whatever. The association with CNN seem like it is there when I see the two (CNN + Jennings) put together in a single post (like the OP). But that doesn't I have any idea who he is specifically or why I should care what he says. Is he a reporter? a politician? a political consultant or activist? an academic studying something related to politics?(or the former of any of those?) A conservative? A moderate? A christian nationalist? A socialist? I don't know. I am unfamiliar with his nature, other than he seems to be on CNN from time to time and people post clips featuring him saying stuff that I don't watch. (I never watch CNN at home, only in hotels and airports.)
If someone is being cited as saying something relevant or important, it is good to have clue who they are and why their opinions matter. Given the inane nature of the quote offered here, I am not impressed by him as a reliable source of anything.