I am not disagreeing. But calling the battery pack “reverse charging” simply because it charges a phone and can SSO charge AirPods does not make sense. That is just having to coils in the batter pack.
Reverse charging - at least as presented in other rumors there the iPhone would support it would be for the phone’s coil to receive power to charge from a Qi charger (cord or battery pack) And also to allow the phone’s coil to send power to charge the AirPods.
this battery pack does not play into it.