Very low tax rates especially for expats and expats tend to get paid 3-4 times the average in total comp and even more if they contract for the more “high end” roles, there are a lot of shady companies there especially in cyber security tho so some of these might have hidden risks.
That said unless you really and honestly like the South East Asian expat life style you wouldn’t last there long, it’s pretty hard to live a “normal” life there.
SG expat here. You're right the average salary is pretty low. I'm already on the higher end of SG salaries earning 120k USD.
Keep in mind that the tax rates are lower though.
Most expats I know work there under contract at least here in the UK I see a lot of £1200-2000 a day contracts for Singapore being advertised especially for security/fintech roles.
Unless you are being relocated you usually don’t want to work for a local firm unless you are contracting.
That said unless you really and honestly like the South East Asian expat life style you wouldn’t last there long, it’s pretty hard to live a “normal” life there.