"He worships at the temple of his own narcissism."

No, not Cuomo on de Blasio, although the mayor's irresponsibility is approaching that of Jacob Frey of Minneapolis.
Rather the comment is from Marlon Brando when Burt Reynolds was being considered for the role of Michael Corleone in The Godfather.
The line of thought was something like: Governor Cuomo > Fredo > Michael > Bill de Blasio ( né Warren Wilhelm Jr.) > Brando.

The full quote on on Burt Reynolds was:

"He is the epitome of something that makes me want to throw up. 
He is the epitome of everything that is disgusting about the thespian, 
he worships at the temple of his own narcissism."

If the reader has stuck with me this far I feel I owe you something. Here's our last use of the quote:
People, People "That Time The National Security Agency Invented Bitcoin"

Interesting story.

Earlier:
Governor Cuomo Threatens To Remove Mayor de Blasio, Send Him To Nursing Home

A couple more Brandoisms:

"I don't want to spread the peanut butter of my personality on the mouldy bread of the commercial press."

"If you're successful, acting is about as soft a job as anybody could ever wish for. But if you're unsuccessful, it's worse than having a skin disease."

Source for all: IMDb