Yea those days are gone thanks to highly developed malware and easily downloadable exploit packs. Once updates get released people quickly reverse them and use the new exploits before people get around to wait 15 seconds so their computer can reboot. Comparing rebooting to install updates to a system crash is ridiculous.
When I'm playing a game and my system suddenly restarts without warning it feels like a crash. Nag all you want, but a restart without explicit user approval is a terrible design decision. And if you are going to do it at least postpone it to a time when the user isn't actively using the machine.
