When was it not? Telemetry - the act of collecting logs/"metrics" and reporting them back to a remote (tele) station - how could this not be considered telemetry?
Edit: have been doing software since the mid-nineties. You can downvote all you want, but this is a more recent usage.
The opt-in thing is fine, but some of us are still stuck, I guess, on older standards for software ethics, and find it entirely unacceptable and alarming that opt-out was ever proposed in the first place, about as bad as if they'd proposed adding an opt-out bitcoin miner to it to help fund the project—it's disturbing they'd consider that OK to even propose.