I disagree. There's NO situation where this kind of update is good for users. Being unable to accidentally brick your machine is good, but no user benefits from having adware and spyware installed.
Sure, but my point is mostly that generally restricting user freedom results in much less of such getting installed.
The ability to control your machine is always good for users in the long run, though you're right it's important to make stupid changes very difficult for less sophisticated users.
Perhaps your bank should control your money so that you don't spend it unwisely? Users are stupid, after all.