I feel that, in the Desktop OS development progression, at some point the providers (MSFT, Apple, Lunix distros) simply exhausted the list of features that users actually need. I think for Microsoft it happened at around Windows XP (and some people think it was Win 95). At least for me, past Win XP, the OS simply gotten worse though the infinite bloat and making UI "cool and looking like Facebook page (the so called Facebook envy at the time)".

Desktop Mac OS, which I currently use, has 99% features that I don't need and don't like. I don't need to spend every second of my life checking latest social media posts, "cool" videos or "wonderful" songs. Luckily the UI is still good and kernel is still POSIX compliant, although I would strongly prefer straight Linux and none of the Apple's command line, storage and memory compression "innovations".

Desktop Ubuntu Unity -> everything is a search. Why do I need this? What wrong with the straight windowing system coming from XEROX PARC? It was designed to be just like the pieces of paper on your actual desk. Why would you not want this? It feels like innovation for the sake of innovation.