He's fiery exactly because of his tame reputation. He thinks that's what is necessary. It is on purpose. A) You don't know that for a fact, B) That's something every single new manager claims C) These are major league baseball players, they are going to play in a manner that they always play and D) This isn't all that important, what's most important is how good at playing baseball your players are. And when he's already shown that he has no problem wasting his best hitters by bunting in the first inning, or with his #3 hitter - it doesn't inspire me with much confidence.