I'll also point out that if you had read the first few posts of the thread, I wasn't complaining about the UI.
You weren't but pretty much everyone else was.
I was complaining about the total instability of the system, constant blue screens of death, and the fact that Microsoft is a bully and decided a key that was perfectly valid when I installed 8.0 was no longer valid for an 8.1 installation.
Your problem is a very valid problem and I understand that since problems only began when you changed OS it may look like it's Windows fault, but my opinion is that either manufacturers adapt (make drivers) to the OS people are using or make their own OS, in this case it's hardly MS fault not directly supporting through MS Update your specific motherboard/whatever. In my case they supported 99% of the things, but even if they didn't I knew Toshiba/NVidia/Intel/etc wouldn't fail on me (as they didn't for that 1%).
About the key problem, my experience:
I had my license for win8 from DreamSpark for free, made a clean install, then updated to win8.1 directly from the Shop App with no problems at all and no further activations. When it finished just had to restart and it was done, so you may guess it's hard for me to believe that Win8.1 is the root of all problems
Anyway I think that everything has been said and it was made clear that Win8.1 it's not like a virus, it is an OS, and a very nice one. So nice that even the most "computer retarded" people can use it even if they barely know how to use a mouse. I guess that's what this "stupid interface", as you call it, is about: technological integration for everyone, from the electrical and computer engineering student that programs some silly embedded applications every now and then (me) to the regular housewife that just wants to upload some food photos to facebook.