Worked for me on 8.1 as well. No icon, no updates were reinstalled, and no Windows 10 being pushed.
Yes, but did you have you update settings changed from manual to 'automatically install'? Well I did, 3 -4 times, and therein lies the difference.... unwanted/hidden updates were able to be reinstalled. Apparently, others [including Wiz] were having the problem, which is why GWX Panel was created... to prevent MS using such forceful tactics to push Win 10 where it wasn't wanted. Since installing it my settings have remained as I set them... and no more 'nags' to get an OS I neither want or need.
Starkers...no-one's calling you an idiot. It is just that IF MS thought they had managed to push the icon and/or update configs to everyone no matter what they did and/or how they followed directions to avert it then they failed to do so because at least one system on the planet definitely did not change....and I expect the 2 others of mine if left as they were and not subsequently updated manually would still be as they were.
1 - Sure felt like it, though. I've been tinkering with computers for 10 plus years now and reasonably know my way around the BIOS, Windows and the Registry, so I'm not exactly the PC illiterate novice when it comes to making such adjustments. The fact that I performed the procedure 4 times AND disabled GWX in the Registry would suggest something was awry.... and that something was, I believe, a kb [not included in the original bunch] that allowed for my update settings to somehow be changed. Thankfully, GWX Panel has ended that debacle - same for Wiz, apparently - and I'm free of the hassle.
2 - You can expect it, but what if MS does as it did to me and others... change the update settings to redownload AND install those unwanted/hidden updates? It does happen... maybe not to you.... as yet... but it can and does happen.
Anyway, that is all I have to say on the matter. I've had just 4 - 5 hours sleep in the past 3 days [vertigo, arthritic pain, etc] and too I'm knackered to be bothered with it anymore.