This is all gold. And I don't just mean the knocks on Brett, I mean the whole of Packerdom's complicity. Though I would add one item to the list of characteristics.
Brett wanted to be remembered another way. In 2000 or 2001, he gave Peter King an interview that claimed if the Packers ever felt he was done, he would retire rather than face being released or traded. Even at the time, this seemed like grandiose statement, one he would have trouble backing up.
When push came to shove, as Brandt has written, neither Favre nor Thompson were able to have a conversation that they needed to have. How to end it, peaceably. Each hoped the other would be cowed by the negative reaction to do what the other wanted. Instead it simply got ugly.