I think there are more people who are happy with (or at least tolerant of) Windows 10 than some of us geeks might like to admit. A lot of non-techie people aren't going to run into the negative aspects of Windows 10 much in practice. They aren't going to be changing enough settings to be frustrated by the multiple UIs. They won't look up each OS update online before deciding whether to install it. Many of them care less about issues like privacy than we tend to and willingly hand over huge amounts of personal information to online services anyway. Some of them will get stung badly, and they'll receive the same half-sympathetic, half-contemptuous look their techie friends would give someone who chose a dictionary word as a password or who didn't back up their precious photo collection. Most of them won't get stung, and probably have no idea about any of these issues, and happily carry on with their lives worrying about things that are much more important to them.

That said, the same rise in online services that Microsoft seems to be betting on as a corporate strategy has made Windows increasingly expendable on the desktop. For day-to-day use, most techies I know are now on Linux or Apple desktops. A lot of non-technical users are fine with just their phone and maybe a tablet for everyday stuff now, and Apple laptops are popular with home users who are OK with the premium price. Windows laptops are seen as the cheap (in every sense) option, and I don't remember hearing anyone ever say they specifically wanted one. It's different in enterprise world, but in enterprise world the technical advantages of Windows 10 are more useful and most of the worst disadvantages don't apply.

I also think reports of Windows 7's demise are premature. It's obviously only a relatively small part of the desktop market now, but people are still using it for a variety of sensible reasons both at home and at work. I imagine they are more interested in being able to run whatever software or hardware is keeping them there than in lectures about security from people whose proposed alternative would disrupt their work and compromise their privacy by design anyway.