Some of this is just orientalising fantasy.
99% of the population live in closely huddled apartment blocks - when I lived there I could see into a dozen apartments across the way just by looking out my kitchen window. Not parading around in your apartment with the curtains open therefore makes sense in that context.
There are far more concerning things in Singapore, like that is that 70% of the economy is owned or linked to companies controlled by the government and therefore the Lee family, and that ballot papers have serial numbers on them.
Rarely mentioned though is that the kids are alright. There are thriving DIY/underground punk, ska/reggae, electronica, hip hop and metal scenes there - all organised by the yoof. If you’re ever in Arab Street, check out the record shop at the back end of the historical Arab Street precinct, it stocks local and regional indie music.