Every computer should have a hard cutoff power switch, when thrown it cuts all physical electricity.

Off means off.

The current trend of soft power buttons, parasitic loads to service impi, or management engines wol, etc is just bad practice and removes agency from the user.

Who hasn't wanted to turn off a laptop to put it in a bag only for the shutdown to trigger an update that takes 10m whole your running late, so the laptop overheats. Or worse, the laptop turns on while in the bag!

The fact windows has a poor ability to apply updates live or In a a/b fashion is no excuse for soft poweroff buttons. Sure it's nice to flush file system write through caches, but Ive been burned by fake power off far more then incomplete file writes.