You comment as if having windows ensures you have perfect laptop power management every time.

It doesn’t. I’ve had windows laptops that burn power when closed and apparently sleeping (in fact we still have it, a Lenovo yoga device), or just run up the fans when idle.

I’ve also had a MacBook that once in a while would be hot and thrashing its fans when I retrieved it from my bag (retina MBP 2014 IIRC)