I understand the enthusiasm but from the business perspective it does not matter. Many businesses would fail if they go too deep on this. Their only audience would be people who are experts in the area. Other people are confused and disappointed since things are not working as they expect.

On Apple's scale, most people care about the things they can do, not about how it happens. For that reason, default matters when the option is only about the internal process pipeline and privacy.

As a result, it is enough to showcase that in case some expert investigates the matter, they show that privacy is considered in a reasonable level.

Maybe some day in the future these things are common knowledge, but I fear that the knowledge gap just increases.