I grant that its an intentional affectation, which can make it a bit annoying, but it seems to put me at ease while hearing about the deep details of the stressful issues of the newsday. Cadences can put us in a hypnotic trance and I think his comes pretty close and it can be soothing.

Still, I don't find his cadence as objectionable (or 'intolerable') compared to what are my three pet peeves when listening to speakers: uptalk, feminine vocal fry, and the dropped final '-in' syllables (e.g., 'button', etc., practiced by a good 60%+ of Gen Z)

So I was a bit surprised to see such consensus around Barbaro's cadence, but your mileage may vary.