[StefanHamminga]

For this reason I'm considering updating my Terms of Service to include a 'Windows 10 clause' clarifying that any OS that can't be trusted in its default state is in direct violation of any NDA provided by me and would nullify any NDA imposed by other parties.

This because, imho, the issue with every proposed 'fix' for Windows 10 is the same: The deal the Windows 10 buyer made with Microsoft is that Microsoft is allowed to monitor you. There is no guarantee that Microsoft won't disable any fix at a future time, like they do now with methods to bypass their software features (like activation).