If Porter was given multiple times to fail like other coaches were he would probably be known as one of the best young coaches in the league. Instead, he gets a shitty Milwaukee team to the playoffs, and he gets a Phoenix team to a record above .500 and playing some resemblence of defense and gets fired.
His speech impediment makes him seem dumber than he is. It seems to be going around. There's a current thread about Oden grunting in a song, and a thread a couple of days ago about Shaq, who will now be a TV regular, slurring his speech.