They are doing the Nike mistake - they are targeting users that have already purchased a Mac. Data-driven decisions are great, but this would just result in alienating people who are not already customers, or chase people out who are unhappy with this decision, so their next purchase will not be a Mac.

These machines draw 1 watt in sleep. There’s no need to turn them off.

You’re probably using more power shutting down your PC every day than if you just put it in sleep. A minute of chugging away booting and loading all your junk at 100 watts vs 1 watt, and no waiting.