Lmao, you're just grasping at straws here my friend. To 'smart' people as you mention, the argument here isn't being made specifically in the context of hardcore economics. And this is all ignoring the fact, that a differentiating factor and a competative advantage aren't necessarily mutually exclusive.
As for impact, I agree that the users themselves might not be that 'caring' as they claim. However, apple is doing privacy, while everyone else is not. That's an advantage. Even if it's only indirectly. Apple isn't marketing devices as PRIVACY machines at least not to the degree it's noticable in any sort of commercial. But I am sure the smart people in business know that apple has taken advantage of being privacy focused, still. Moves like removing facebooks and twitters integration in iOS/Mac OS by default, are suttle but effective.
It's silly to think something like this wouldn't have an impact, marketing and subconscious stimuli is all you need when it comes to apple. Don't see how that's any different here.