[crispinb]

I won't disagree that it's unacceptable.

But in practice you can prevent the automatic reboots happening while you're working with the 'Change Active Hours' feature (just search on that term in settings).

Again, not arguing about the rightness of Microsoft's silly policy here, but if you're using Windows you might as well obviate the issue. You can - I've never had an automatic update & reboot interrupt me.