I don't think the concern is that it isn't a useful idea in many (mostly corporate) applications. It's the continuing loss of personal freedom to control your own computer. I would think plenty of people would be fine with it for their job, and very against it for their personal lives. Personally I've been done with Windows since Win 8, but I still primarily use a Windows computer for my job. Also I fucking hate Windows 10 (what I use at work). They literally move buttons around, etc, every single time they update. Every week or two you will lose some basic functionality, and then it will randomly come back a week later. It's like the digital version of mental illness.