I would assume that the guy is offering to sell buddy passes. It's standby travel, not confirmed.

If it were a mileage broker, the itinerary should show award ticket booking codes, which should be obvious if one knows to look for the fare class. It would be even more obvious on the receipt. Also, for award tickets, AFAIK they can be issued at anytime--probably with a fee for airport ticket office service--but would require some sort of permission from the FF account owner beyond just knowing the PNR for an itinerary. Even more to the point is that IIRC award tickets cannot be placed on hold but must be ticketed immediately. So the conversation about the airport agent not being able to issue the ticket (versus issue a boarding pass) until T-24 doesn't make sense for award tickets.