Highest recommendation for Robert Caro's The Power Broker, biography of Robert Moses. The guy who built NY's parks, bridges, highways, etc. How he acquired and wielded power. The impact he had nationally. It gives some insight into the game Cuomo and so many others are playing.
Politics is nasty. Full stop.
My only TIL that I can offer: Everyone should run for office. Any office. At least once.
Once you decide to play the game -- play to win -- every thing makes perfect sense.
Not to excuse it, in any way. It's just that folk theories aren't even wrong. So people get worked up about the wrong stuff. There will always be devils doing bad stuff.
What should we do about them?
(Haven't started Caro's LBJ biographies yet. I've gleaned that LBJ makes Moses look like a middleweight.)