The oil rig guy is nowhere near the flight path.
The rig at that location does not match the name in his letter.
https://www.marinetraffic.com/en/ais/details/ships/8767771/vessel:TAM_DAO_01
Thats a vietnamese rig. His name doesn’t sound Vietnamese.
“The oil rig guy is nowhere near the flight path.”
At this point... What difference does it make?
(Sorry, somebody had to do it...) ;-)