@blub can you explain me how it's exactly "spying on you"?
There is difference between collecting information about how many people are using vs whether a particular person is using.
Collecting diagnostic information from windows application failures/how many failures etc are there ever since Windows 95 era.
Similarly, collecting information about how many people are using dotnet core build/test/publish is similar to how Google/Mozilla tracks how many users are running which version of their product and experience issues.
If Microsoft/Google/Mozilla or any other company uses that information to identify a specific person is "effectively spying on you". Until that's not there, the same functionality exists in almost every product. Just click bait article.