Seems like I would take a super powerful Windows or linux server any day over a lower powered Mac Pro just because of the OS if hardware specs were that critical.
Taking 10 vs 1 minute to render would be way more important.
BTW, Windows 10 has multi desktop and most apps work fine with high DPI.
Every single app integrates well and the scaling is flawless even for the few that don't support 2x mode. I have never dragged a window between screens on the Mac and seen it appear at the wrong scale.
I've done it about 50 times in the past week at my day job on my Windows machine. To be fair, that Windows machine drives a VR headset that you just can't use on OSX because no Macs have the compute power needed - there are definite wins to going with Windows.
It's just that the Windows mentality is to just get most things working and assume the rest is just something that most users won't care about, whereas the Mac mentality is to get it all to work together seamlessly.
But yes some windows apps still leave a lot desired on 4k if they haven't been updated.
I enjoy both OSs (the UX is basically 90% the same btw), they're fine. And there are areas where one works better than the other. By focusing on the issues with one of them without realizing the issues of the other just shows that you're probably not familiar with the other.
I'm not disputing your point, just showing your partiality. I've literally not had to "manually" resize or drag a window in Windows since Win7, but I do it everyday on mac. The Windows model for window management is just better, but you'd never hear it in these comments.
I use Windows more than OS X these days.