There are unfortunately plenty of cases (and raging threads on various forums) of people doing this, and finding that eventually Windows updates itself anyway.

There are unfortunately plenty of cases (and raging threads on various forums) of people doing this, and finding that eventually Windows updates itself anyway. Part of the problem was the new "Dual Scan" GPO which defaulted the way you didn't want it, part of the problem is that Windows 10 Professional doesn't behave like Enterprise (and people are used to "Professional" being suitable for business historically). There are of course options and workarounds but people only tend to get burned once by this sort of thing.