Shows like John Oliver could go 20+ years easily. If he’s happy and making the exact show he wants to make, I don’t see why he wouldn’t keep going. Bill Maher is on season/year 21. And it really can’t be that expensive compared to their other tent poles.
Dehumanization is how Hitler justified and sold his actions. I would recommend against that. The other side is human just the same as you, no matter how monstrous they act.