That's really interesting, because the Disney comparison could only be considered positive, and the death penalty thing is strictly speaking a fact and public knowledge.
They are famous for having a lot of rules, but the instances where they really go wild are when someone has been particularly egregious.
For the most part it is just insanely materialistic as the main downside.
Most of the "harsh" rules make a tremendous amount of sense when you actually go there. Yeah, gum and spitting are illegal, and that is a good thing in a city as crowded as that with a significant population from countries where spitting is customary. Take an overnight train in China, and you will come to discover that you too appreciate a place where people can't just hork one up at will.
To put it into perspective, SG is one of the rare tier 1 cities where you can get a Michelin meal from a street vendor (literally), after engaging the services of a prostitute, and drinking a beer in public. It isn't nearly as uptight as an HOA.