Like I said, for a lot of Americans all those restrictions are probably intolerable.
But for people growing up in a Confucian culture, it seems appropriate. Harmony and social peace are valued more than diversity and personal freedom.
There are certainly trade-offs. If personal freedom matters a great deal to you, then you won’t be happy living in Singapore.
You are off-base with your diversity comment—Singapore is very diverse and the government has gone to a number of lengths to preserve that. Also, not sure that I agree with your social peace comment either. One can maintain peaceful society without a single political party crushing all opposition with an iron fist.
I presume you don’t live in Singapore...