I have been using WUB, and some other extremely helpful tools that this company makes, for a few years at this point.
The part that I LOVE about WUB is how complete and exhaustive the shut-off is for the ease of use.
There’s no editing files, no editing anything, just download and press a button to turn on update blocking (while protecting the services that could mess up by blocking). Press another button to unblock everything as good as a fresh install.
It’s as if it was never blocked when updates are toggled on, and it’s as if Windows update is completely removed with the blocking is toggled on.