And rightfully so. Corporations will find every conceivable way to track you and no API will be left unused, including tracking MAC addresses of bluetooth devices around you, which is a relatively easy one.
However, you can absolutely allow an app to access that API so it can scan for those MACs.
Funny thing, as soon as the API is locked down and presented as an option to the user, companies stop using it since nobody wants to give bluetooth access to i.e. Facebook.