Totally unrelated. (almost)
I finally let my Win8.1 update for the first time since the nagware began and it looks like things are back to normal. The ugly KB's are in the "recommended" section that I'm still ignoring, and the security updates didn't seem to fiddle with my system to log into MS data harvesters. (yet).
I look forward to my GWX-free future.
Wasn't GWX also the "Genuine Windows eXperience"? Kinda odd to re-use their own acronyms.