Echo chamber feedback
In my view, Microsoft has put itself in a position of getting feedback from an echo chamber. So the feedback is entirely worthless.
The preview releases of Windows 10 seem to consistently offer "improvements" in features I would never use or even look at.
Cortana, Edge, Windows Apps. Nothing actually relevant to my use of a PC.
So I stopped bothering to bother with preview releases. They have no real-world relevance to me.
Unless I'm alone in that, this means that the feedback they get will be from the people who think these stupid ideas are relevant and interesting. Microsoft will get a distorted view of public perception.