He (Lemon) and Fredo mostly invite guests to nod along.
Cuomo vs. Mark McCloskey segment showed poorly on Fredo, that he seldom got push backs from guests and didn’t know how to respond.
These ‘hosts’ biggest weapon is to cut people off and/or talk over them, to them it means they “won the debate”.
I've never seen a teevee host lose a debate, or admit losing. never. By their defintion, they are never wrong.
That position is ludicrous, of course. pretty much all they have is freedom to say nutty things, and hope people watch. It's not about being right, it's about preaching to the choir and making money.
They’ve taken their cues from Sean Hannity.