The casebottom of my 15" MBAir has never exceeded 32°C — and that's sitting on a bed. Just a matter of physics: conductive case has orders of magnitude more thermal mass.
It also helps that Apple Silicon processors consumer orders of magnitude less power than most competitor OEMs. Pegged out the entire machine uses less energy than my former notebook's GPU, alone.
It also helps that Apple Silicon processors consumer orders of magnitude less power than most competitor OEMs. Pegged out the entire machine uses less energy than my former notebook's GPU, alone.