What you are actually saying, but can't seem to admit to yourself, is that Rodgers is no longer "special" as a starting QB. He has joined that group of QBs you often refer to as "others". Given that he no longer brings anything special, why should I or any other Packer fan care who he plays for?
Because if he plays for Minny it would seem to help GB's chances if defeating the Vikes.
Then there's the Schadenfreude.
"The Devine era is actually worse than you remember if you go back and look at it."