Thing is, this is a double-edged sword, I will say depends on how Mandani draws, bear in mind the congress democrat still wouldn't stand behind him, and if he f up NYC, these people (Jefferies, Schumer et el, probably except Bernie and AOC) will bury him.
New Democrats movement that follows Mandani is going to need to fight 2 battle, one agianst the GOP, the other against the Dem establishment, either one can kill this movement, and the Dem establishment is not in that mood to endorse Mandani just yet, that is the issue, so yes, he need real performance and high poll number if and when he go after the NY governorship, otherwise he will just be disappeared in all those new faces of Democrats