>we will measure Telemetry Coverage, which is the percentage of all Firefox users who report telemetry. The Telemetry Coverage measurement will sample a portion of all Firefox clients and report whether telemetry is enabled. This measurement will not include a client identifier and will not be associated with our standard telemetry.
It's just a matter of time until some developer poses the question:
"Are people who opt out of telemetry more likely to use Linux? Or live in Europe? Or have NVidia GPUs? Or... "
and gosh darn everyone else at Mozilla begins to wonder the same thing, and the best way to answer that question is to include it in your "totally not telemetry" telemetry reports, and then we're back to Square One.
Telemetry for telemetry. Nice.