Giving fake location data could create real problems. Suppose you do this then forget. If it’s a safety or navigation app, you tell the phone to give it fake data, then you forget and maybe use the app much later. Now you’re using a service that thinks you’re in a different location.

One of the examples given here was an app that gives you safety alerts. A navigation app might give you useless directions. There are a thousand ways this could go horribly wrong.

I suppose iOS could present some warning, but that might interfere with the UI, or be misunderstood.