Comment by MarioMan

If you have evidence to the contrary, it would make for a great lawsuit. Apple is very explicit that they cannot read it. This data is end-to-end encrypted, much like the data collected by the Health app. They never have the keys to it.

In comparison, Apple also has plenty of your data “encrypted at rest”, where they have the keys (unless you use advanced data protection). That data is only superficially secured. That’s not what this feature uses.