Spyware has a definition. You don't get to change it.
Telemetry doesn't aim to do this.
The data is close to impossible to inspect, and impossible to turn off without third-party tools or firewalls. So I suspect there's something to worry about.
https://www.microsoft.com/en-us/p/diagnostic-data-viewer/9n8...
You are correct in that they do not permit users to turn it off on Windows 10 Home and Pro, which is egregious and offensive.
They wouldn't be celebrating your cluelessness, they are talking about a "revolution", aka a revolution in the publics cluelessness about software ownership.
Why does ANY piece of software need a remote computer in order to function?
https://tifca.com/wp-content/uploads/2019/09/ClienttoCloud_V...