I do all of the things you mention without problem. I don't definitely don't think GNU/Linux will die as a result. First off, syscall emulation will always be clunky. Secondly, many people care about their freedom. Thirdly, what makes you think that a majority of people using GNU/Linux will switch. I haven't had driver or network problems for the past 3 years on any of my various machines.
Same here. I use Windows maybe once or twice a year, and it's always a pain. "Winux" won't change that for me and to be honest, I don't really want to support Microsoft. Sure, I think VS is a pretty nice piece of software, but that's about it - too few reasons to switch.
No need to be flippant. Yes, I read those comments and I don't share those experiences. I've used my fair share of odd hardware and I've never had problems that couldn't be resolved without half an hour if Googling.