I don’t deny that when Newt 1st began, he did the job. But that was then. A lot of water has went over that dam.
He also got himself ousted out of the Speaker role and has been drifting left on too many things in the past years.
I don’t think Newt’s problem is what he says now regarding policy, but it has a lot to do with his past behavior.
One you lose trust, it is harder to convince people.