It may be that I'm a naive optimist, but I agree with him. When I look at who the hard core believers envision as the next torch-bearer, none of them have what it takes. Not Vance, not Rubio (Rubio! Suddenly he is 'strong'?? When was that ever a widely held opinion??), not the Trump kids. Trump has a way of defying political gravity and repeatedly escaping the consequences that take down every other politician. In this case the liberal consensus that it's a cult may not be that far from the truth -- maybe that's a loaded term, but how else do you describe a group of supporters whose faith is so strong that their ideology changes by the day to match whatever their leader currently says, even if it is diametrically opposed to what they said last week?
* https://en.wikipedia.org/wiki/Michael_Wolff_(journalist)
He used the term suis generic in a (PBS?) interview to describe Trump:
* https://en.wikipedia.org/wiki/Sui_generis