People should read the earlier posts on the thread that explain the context of this - what the healthcare system is like in Singapore:
You do have to pay for medical care - for accidents, obesity-, smoking- alcohol- genetic- related conditions. But for citizens this care is subsidized by the govt. covid was an exception - where the govt provided free care (understandable at the beginning of the epidemic as they wanted people to come forward, isolate and be treated rather than spreading it at work and home). Now (after track and trace, vaccines, treatments, testing have come in) govt is removing free care - which brings it in line with all the other conditions (like if you choose not to have hep b or measles vaccine and you contract them, you have to pay for treatment - which is subsidized - as covid treatment would be).
The only remaining exception is free covid treatment for fully vaccinated people - you can argue that this might be to encourage anxious people to go to work and stimulate the economy.
It’s a different system from the U.K. and has it’s plus and minus points. I mean U.K. had a period early in covid when the health system was overwhelmed and people were prevented from seeing dying loved ones in hospital. Now ambulances can queue a long time outside hospitals. The pandemic was better controlled in Singapore and I don’t really think they had the same extent of the problem.