> What is the reason for the difficulty of supporting the built in wifi ?

AirPort:
https://morph.zone/modules/newbb_plus/viewtopic.php?forum=11&topic_id=6042&start=51
(You'd have to ask jacadcaps for the exact reason for the blacklisting.)

AirPort Extreme:
https://morph.zone/modules/newbb_plus/viewtopic.php?forum=32&topic_id=6869&start=12