> Prove that Windows spies on you.
Well, for starters, they updated their EULA to permit them to spy on you as much as they want, legally:
https://thenewamerican.com/us/tech/computers/windows-10-is-s...
While Microsoft gives the option to disable some of their spyware, it is not possible to disable everything via Windows settings:
https://thehackernews.com/2016/02/microsoft-windows10-privac...
I could continue, but where have you been the past 10 years? Windows has been spyware since Windows 10. There is oodles of telemetry, and you need to have been living under a rock not to know about this. This seems appropriate:
https://www.youtube.com/watch?v=TKYQ5ibxslI
By the way, long before Microsoft started blatently spying on its users, they put a back door into Windows allowing them to push updates to Windows machines, even if you disabled updates. We know because they used it at least once:
https://www.informationweek.com/it-sectors/microsoft-updates...
When a company can push updates to a machine, it can change whatever it wants. Such changes can include giving themselves full remote control of the machine, if they did not have full control already.