> Yes, UAC could be considered as annoyance by some but it's no different than "sudo" on single-user Linux machines and we seemingly have no problems with that (I wish we'd move on past that because it is damn annoying and offers no security benefit).

It was wild to me when I was testing out if I wanted to move over to Linux as my full-time desktop OS how much it was asking for my password. And it didn't even have a mechanism to make it a little less painful such as requesting a short PIN (which I think is a fine option as long as a few incorrect PIN entries forces full password input).