Earlier quoted context omitted.
Funny, because I was wrong. Here’s the Nvidia privacy policy: https://www.nvidia.com/en-us/about-nvidia/privacy-policy/ How I was wrong is was in the “valuable debugging information”. Because you can actually disable the sending of debug and crash statistics, but you cannot disable the collection of tracking everything you do except for password boxes! The original source on the telemetry was a print magazine, Canard…
Where do you opt out if you don't have GeForce experience at all?
You need to kill Nvidia telemetry services (one site has it listed as nmtvmon).
Another option would be to block traffic to Nvidia from leaving your network (pihole captures at least some Nvidia telemetry, not sure if it blocks all). I don’t have a list of urls or IPs to look out for.