I do wonder. I know of the opposite problem in other spheres (some areas in physics), where it is hard to run scientific programs under Windows, and some people resort to WSL, but many also just run Linux on the metal.

EDIT: With Mac, I do not know.

Except that many Android phones also don’t have replaceable batteries anymore.

Because Joule is the SI unit of energy, meanwhile the Watt is the SI unit of power, equivalent to one Joule per second.

“Converting” joules to watts would be like converting m/s to US dollars.

I don’t see how your example is ‘funny’. That’s what you expect to get. -5² is -25. (-5)² = 25.