The standby power draw is 1W or less. I've used Mac Minis for years -- just replaced my M1 with an M4, though the M1 left me wanting for nothing -- and the number of times I've interacted with the power button is so negligible I imagine I've gone over a year without touching it. When I haven't touched it in a while it goes to standby, waking instantly when I engage it again.
Note: intentionally keeping it simple, please don’t nitpick.