It's difficult to argue with a speculative point like that. But just to say, after W7 I became increasingly dissatisfied with Windows, so searched for an alternative. I hoped to find such an alternative in the Linux ecosystem, and although I found several I could use (Ubuntu, Mint, Zorin), none of them felt as clean, coherent and polished as W7.
You argue that I might be closed-minded ("looking through blinders") about what I want, such that I was rejecting perfectly competent solutions simply because they weren't exactly like W7. Well, I guess you might be right, but don't we all have an idea of what we're looking for when we go on the hunt for something new? It would be rare not to.
I will concede this: although I'm very open-minded about how a new OS looks and works, I am very demanding when it comes to polish. I think W7 was the ultimate desktop OS for polish, although a significant minority would say that about MacOS. The point is, both were the result of 30 years of careful, inch-by-inch tuning of the UI elements and design language.
That relentless drive by Apple and Microsoft towards the perfect UI for mouse and keyboard users requires a degree of long-term commitment and investment that only proprietary software can realistically hope to enjoy. Bill Gates and Steve Jobs owned those OSs in a way that Linus Torvaulds deliberately doesn't own the Linux user experience.
The Linux user experience is unpolished because there are dozens of distros all absorbing developer effort, with no mechanism by which careful fine tuning and polishing of the UI can reward all the effort expended.
Let's be honest: unlike in server land, Linux on the desktop is never going to generate lots of revenue, because what revenue there is is spread across dozens of suppliers, each with their own pet ideas and none of whom (I'll bet) have their own usability labs. Also, practically nobody specifies Linux when buying a new PC, so again, there's no real money to be had from desktop licences. And that's why Linux remains unpolished - because basically it's a server OS where the UI is far less important.