The spying of Windows 10 can be shut off and should be shut off. My main issue with it is that these options are hidden behind "nah, you don't want to go to these ridiculously advanced settings"-language, when, in fact, they explain properly what they are doing. Even if the "why" is often lacking - and some options have to be removed in the registry etc. The only thing I haven't managed to remove yet is the "Microsoft Edge Cache Database", a browser database of sorts, that runs at all times.
What really fascinates me though is how nice this OS looks and how troublefree the transition from 7 to 10 on an old laptop we had lying around was. Very smooth. That lazy old PC is actually quite fast again. And every single bit of software installed on it works just as before.