Where do you want me to start? Singaporeans do comment and criticise their government.
Current wave is a result of two hotspots. Jurong Fishery Port, the largest and most likely brought in by Indonesian fishermen, and a local KTV lounge. Theres no disguising what the KTV lounge is, it's legal in Singapore. Was wildly reported and officialdom even commented that it might be harder to contact trace because husbands don't want to reveal where they have been.
Not sure what locked up low income people or Towers you are talking about.
I think he's talking about the migrant workers who are in dormitory accommodation and were locked up in phase 1.