Opt out of update 13.7 contact tracing

You don’t opt out. In order to use the feature you have to opt in. You need not do anything at all. This is copied from this website.

About iOS 13 Updates - Apple Support

iOS 13.7 lets you opt-in to the COVID-19 Exposure Notifications system without the need to download an app. System availability depends on support from your local public health authority. For more information see covid19.apple.com/contacttracing. This release also includes other bug fixes for your iPhone.

So you’ll presumably want to get rid of the device with the camera, the microphone, the many apps that track locations, and the cellular communications network that inherently allows tracking. Pretty much every phone now include GPS tracking as part of 911 services, too. Ridding yourself of that tracking—the whole device—makes removing the cryptographically-anonymized and user-controlled and opt-in—a feature which is opt-in, and not opt-out—COVID-19 proximity tracking moot, of course.

You have to opt in to them. you dont have to opt out, its disabled by default.

Of course, none of those apps are being offered freely for the state governments to access.

See the difference?

True and funny