Singapore is orderly, clean, polite and efficient. There are no gangs and no real crime. Forget about smuggling drugs in - foreigners have been executed for it and they have zero tolerance for rowdiness, rioting and looting. What happened in Ferguson would never happen in Singapore.
Conservatives love it in part because its how its how a big city should be run and how you would imagine living in one. It has its drawbacks but the Chinese know to make a go of making an island city state a very pleasant place to live. The lack of freedom - if by that you mean the decadent vices of the West is in fact no great loss at all. So if you’re the kind of person who likes living without good manners, rules or you want to be stoned, then Singapore is not on your list.
But for others, it could be a good fit for them.
I think you are totally ignoring the dark underbelly of Singapore. At a topical level, yes, it offers personal economic freedom and is indeed clean and orderly. It’s not so great, though, from a freedom perspective.
I founded and ran a company in SIN during the 2000s. I could tell you some scary stories but I certainly will not post them here.