How is it that giving an app the ability to scan for nearby wifi networks is not a permission in and of itself?

The very first time it happened to me, it was confusing - hm, why does this random app, having nothing to do with connectivity, require bluetooth access?

Permissions should be more granular - and more importantly, Apple should make it so not giving an application a non-essential permissions is not grounds for not letting the user use the app.

That was a mouthful, hope it made sense.