You're right about an NPA waypoint as a pos report. It's not restricted to one airline or another, either.
It's a busy time for jets and TP's going out of CTA into OCTA, CTAF, configuration changes, callouts, checklists, head swivelling lookout etc etc
Most RPT drivers will give a distance/bearing/quadrant. I will offer that the guy who made the call was busy at the time - it happens.
HOWEVER:
The same can be said for VFR aircraft calling 'over Old Bessies Homestead' or 'over Bull**** Creek not above 3500 feet' , or overflying the field in a position that is right through the go-around path of a jet.
If you're VFR (or IFR) for that matter, and you don't know where the position from where an aircraft calls is - then bloody well ask for clarification.
Do something about it at the time - don't sit there mute and miffed about the call -
communicate and clarify.
Don't get on here after the fact and cry everyone a river
Here endeth the sermon