A weather app could be asking for your location to give you more convenient local forecasts.

It could also be asking for it to help advertisers build a robust behavioral profile about you.

This is not a systems permission, nor is it something that billions of users can judge the ramifications of each potential privacy impacting decision. Privacy is a systems property, not a technical property enforced with ACLs. ACLs can only keep the door from being wide open, they can't prevent access which has been granted from being abused or help the user understand ramifications of granting access.

We need privacy to be a regulatory concern with actual enforcement via an international framework. Until then, it is a business concern of Apple/Google - because they are in the business of having consumers feel confident that a weather app isn't reporting their behavior to anyone willing to pay for it.