> What people realy want: as little OS as possible
I see what you're saying but that isn't how I think about it.
I'm happy to have as "much" OS as is useful and adds value, convenience, or user experience for me.
Example: I quite like Windows Hello. Facial recognition is the smoothest, most pleasant form of biometric authentication available on a laptop, and it's nice to be able to use it anywhere throughout the whole OS that a password would otherwise be required (e.g. before revealing hidden passwords in a password manager, when opening a command prompt with elevated permissions, or before applying passkeys to log into a website). It starts up fast, works in low light thanks to IR emitters, and recognizes me pretty close to 100% of the time. It's a great experience. My use of my laptop would only be reduced by having "less OS" in this case.
What I don't want is anything that compromises my utility, convenience, or user experience in order to make the OS useful and valuable for someone else.
Example: advertisements embedded in the Start menu are plenty valuable to M$, but compromise my user experience in the process.
Example 2: Inserting Copilot into Paint and Notepad seem valuable for pumping M$'s stock price, but both annoy me by cramming unwanted AI into my basic utility programs where I have no interest in it.
From my point of view, the ideal here is something like pre-OS-X Mac OS, where the OS itself was barely even an OS and more just a substrate just complete enough to run the desktop and third party applications on.
The majority of bells and whistles (which Windows Hello falls under) were not baked into the OS, but instead implemented as system extensions that the user could disable and prevent from loading into memory at will.
This meant that even with the last release of Classic Mac OS (9.2.x), if you disabled all extensions you got a desktop reminiscent of the 1985 System 1 except with color and modern resolution support.
I think it should be more of a goal for desktop OSes to try to emulate this. If a Windows user wants a quiet no-frills Win2000 like experience except with choice exceptions like Hello, they should be able to have that without having to resort to messy hacks that impact stability and undo themselves if you update.