The lesson you should take away from this is that the casual Cardinal fan is stupid. Unbelievably stupid. I was at a game a few years ago, and the people in front of me were discussing how the Cardinals hadn't had a good pitching staff since the late 90's. This was particularly dumbfounding since they led the league in ERA in 2005, and were 2nd in 2004. Meanwhile in the late 90's, they were...not very good.
They were also wondering why Eckstein wasn't playing that night. This was 2 years after he had left. No, they were not attempting to be sarcastic.
I would say this is nearing the bottom of the barrel when it comes to stupid casual fans. But even the average is pretty dumb. So I am not surprised that many of them have abandonment issues with Pujols.
These kind of fans are also part of another large group of people known as ESPN viewers.
Or the large group of people identified as "women".
There's a large contingent of fans who show up at Busch to be associated with the culture of Cardinal fandom. i.e., It is cool to be a Cardinals fan in St. Louis. In my experience there are a lot of women out there who claim to be "huge Cardinal fans" who couldn't name more than 5 players on the current roster, and couldn't rattle off more than maybe 3 of the championship seasons or retired numbers. This group includes, sadly, my fiance.
No offense to the ladies on this board. I think they know that they are in an elite group of female fans.
EDIT: There's also a large segment of clueless dudes. Didn't mean to forget them.