I use a Mac Mini (older model) in my music studio. It shares a surge protector with approx. $12k worth of audio gear (some of it nearly impossible to replace). I have all the gear + the surge protector switched off anytime I'm not using it. Which is most of the time.
While the weight and form factor would make powering the M4 Mini on a little more than a nuisance, I have a hard time lumping this into one of Apple's great design features.