Did you read the notes in the link next to that item?

"In order to use Bluetooth features in your application, you must declare the Bluetooth permission BLUETOOTH. You need this permission to perform any Bluetooth communication, such as requesting a connection, accepting a connection, and transferring data.

You must also declare the ACCESS_FINE_LOCATION permission, given that LE beacons are often associated with location. Without this permission, scans won't return any results."

FWIW, as the comment in the source hints at, it's needed for Bluetooth low energy scanning: https://developer.android.com/guide/topics/connectivity/blue...