From copilot "additional telemetry"
> If you use GitHub Copilot, the GitHub Copilot extension/plugin will collect usage information about events generated by interacting with the integrated development environment (IDE). These events include GitHub Copilot performance, features used, and suggestions accepted, modified and accepted, or dismissed. This information may include personal data, including your User Personal Information
So, not really free is it?
> Look, I literally do not care if you do or don't.
> What I take issue with is people saying 'it has no value'.
Seriously wtf, my legal department will have a heart attack if they read this.
In the eyes of most people free == 'something that i don't have to pay for through my bank accounts or other means', as opposed to caring about analytics, telemetry etc.
At least AFAIK that's the common usage and what almost everyone means, though it's definitely worth it to talk in more detail about what hides under that term most of the time!