I'm probably fighting both sides of this argument here, but not every Cardinals fan lives in AZ and can reasonably own season tickets. I travel for 8 games a year at minimum, most of which are home games. I wouldn't sell my tickets if I had them, which I did from the Sun Devil days - but I moved and things changed. Maybe the same happened for him?
Our general fanbase seems too ready to sell their tickets, and we're perceived as soft fans from others. That doesn't apply to everyone who sells their tickets, but we're one of the best teams in the league, and still couldn't support our team fully over the past 3 weeks. It's sad.