Earlier quoted context omitted.
Despite my bellyaching, Windows is built on much more solid ground than macOS is these days. All the new stuff introduced in 8/10 - Metro stuff, control panel stuff, etc. - can be wacky, but the core OS is strong. It works, it doesn't crash, it acts the way you expect it to. That's all I really want from a desktop OS, and given that Apple has total control over their ecosystem, they are frighteningly bad at providing…
I find W10 lacking in consistency. Poke around in the settings for a while and you will find remnants from the NT days. The dark theme is another example, it works for a handful of their own apps, not even half of them. Half baked and unpolished. I'm a daily W10, macOS sierra and Fedora Linux user. I develop on all the OS:es and play games mostly on W10.
This is, IMHO, a backlash of Microsoft's long update cycle. The yearly update Apple pushed to MacOS, along with free updates, allows for an easier deprecate-then-remove approach that gently transitions users from the old to the new approach. It's hard to do the same when people got used to an OS for many, many years. Maybe W10 with its "rolling" approach will suceed, btw.