Reading this thread up to now, it really feels like you're either trolling or irrational venting.
Hey, at least we had an obligatory detour with Igor on a heath topic.
To here, here re Windows, my dislike with Win10 GUI and others of its ilk is the 'flatness', but re Win10 specifically I find the inconsistency in the GUI the chief annoyance. It makes the OS feel half-baked. Depending on your use case, you could consider Linux; you can get basically whatever OS GUI that floats your boat. Some of what you are looking for though may be found in app theming rather than whatever OS.
Edit: One additional point in response to your last post: Computers these days are commodities. Fine craftsmanship not as necessary or, from a business investment perspective, justifiable. Good enough is good enough. My point above re Win10 GUI inconsistencies? Microsoft has been getting away with it with no apparent adverse ramification. From a resource perspective, it's not surprising they choose to invest elsewhere. I'm certain the more venerable among us can speak to this point far better than me, but my understanding is that this isn't particularly new -- as hardware improves, the software does not require the same level of fine tuning. I'd think today's impressive software is far more likely found in the back-end, behind the scenes context rather than end-user/consumer facing?