Last time I mentioned this, someone replied there's already an Apple idea (or was it a patent) for this.

On the outside they present that as a feature for your safety, but how common is really that someone can pretend to be one of your friends or family member and mid call you don't notice that it is not the case?

But in reality, the goal is to have users not using Android being discriminated with some checkmark or something like that. And try to push users to enable RCS that no one really wants.