I agree with BucCollector, and while I accept the rules governing if/when players should be linked to particular cards, I think it does a disservice to users who are primarily player collectors.
It would be terrific if TCDB could be relied upon for a list of cards that mention one's PC, and honestly I don't see a downside. If I were a Bob Gibson collector, I'd at least want to know of the existence of a card on which Gibson is mentioned. I could then choose to try to acquire it or not, depending on how I define my collection. It's similar to the filter I apply to the multitude of colorful parallels/photo variations/printing plates/etc. (for which I grudgingly realize that owning them all is impossible).