Argyle just kind of shuffled out of being chief engineer. I wonder if he didn't test well with audiences or something.
The Greatest Generation latched onto this early and started seeking out every trading card featuring and signed by Biff Yeager, such that they actually created a bubble and raised the value of Chief Argyle cards.
As a result, a "Natural Yeager" as they call it currently goes for almost $300 on eBay. By comparison, a similar signed Jonathan Frakes card goes for around $100.