It's aggravating to see how many people regardless of nationality would willingly trade away their freedom for some temporary gain and encourage others to do likewise. The next government can lay off all the litter picker-uppers but you won't get your freedom back in return.
Singapore has a net migration rate of 13.1 migrant(s)/1,000 population where the US only has 2.86 suggesting may more people find it an attractive destination than an area to escape from.
Some parts of the US restrict which color you can paint your house. That might seem like a huge negative for some, but plenty of people are fine with this tradeoff becase they care more for restricting the colors of others than they care about maintaining their personal freedom at any cost.
Expanding that to a wide range of similar issues may seem draconian, but it’s not without benifit. Which IMO is why Singapore does not have a mass exodus.