Or it shows that he's trying to set an example of professionalism and maturity for a program that was in a good amount of dysfunction and lacking in some strong leadership? Or it shows that he just likes looking good? Or maybe it's different amounts of all three, or two of the three.
Wearing a suit does not equal your very specific interpretation of what wearing a suit represents.
What? When I see PJ wearing that cut/style and print of a suit it says something to me. It obviously doesn't say the same thing to you and that is fine. It doesn't scream professionalism and maturity to me. He is trying to make a statement. He is dressing for effect. Sorry it doesn't work for me.