It was never him leaving, it was the way he left and the actions he took. I personally was most upset about Favre calling other teams to discuss our playbook. To my knowledge non of the people you listed have ever left the team they were with the majority of their career in any similar way.I'm merely stating in perhaps a too round about way, if one dislikes or hates or doesn't respect Brett for leaving a team he'd been with for years than one must hold the same stance on all of them: Manning, Montana, Emmitt, A-Rod, Jimmie Foxx, Greg Madduxx, Reggie White, Patrick Roy, Charles Woodson, Eric ****erson, Shaq, Barry Bonds, Kareem Abdul-Jabbar, Wayne Gretzky, Babe Ruth and many more....
If one does, than I actually hold quite a bit of respect for someone. If one though is simply holding disdain for Favre simply because in this example in history we weren't the benefactor of the occurrence I ask them to step back and think on it for a second at minimum.
I too love Rodgers more than I ever did with Favre...it is perhaps due to I'm older now and can appreciate what Rodgers is doing more than I did with Favre....but no matter either way I don't hold anything against Favre, dude gave a ton of blood, sweat, tears and heart with a Packer uniform on.
If you were going to compare it to anything in football I would go with Baltimore and the Colts.