Windows Update is just dogslow and forces a reboot. For me even a significant distro update takes much less time and it doesn't force you to reboot (nor to update for that matter).
I don't have to reboot after an update very often, almost never really. It's kernel updates where I have to reboot, other stuff I can restart and avoid it that way if I still want to keep the pc on.
I know on some systems hibernation (suspend-to-disk) can be fiddly. For me it worked out of the box which was nice.
Hopefully they follow the rest of the stipulations of the licenses, such as the common one about keeping the license as such and contributing the changes back.