Pop Reports act as a marketing tool for the Registry game.
Accuracy has never been a priority for any TPG.
Does anybody really think a TPG has a vested interest in finding out if a card submitted to them has been submitted before or if that card is a crossover, so they can keep their pop reports accurate?
If so, I've got some land in the Everglades for sale. Taking offers.
I would also add that one of the entry level jobs at any TPG is Pop Report Maintenance Technician (PRMT) and a high school diploma is not required.