No it isn't. People spend time outdoors perfectly comfortably in Singapore. https://meteologix.com/sg/observations/wet-bulb-temperature....
And given that the maximum ever temperature in Singapore is 35-36 for most months, I doubt that a wet bulb temperature of 35+ is common.
https://api-open.data.gov.sg/v2/real-time/api/weather?api=wb...
(Search for "high".)
The point isn't that it's "just fine" right now, it's that it will get way worse.
No, I'm already not comfortable indoors. It's much worse outdoors.