Games.
Wilgar played 10 games and the d was still bad.
Tuiaki is getting a pass for his own lack of ability to develop and recruit players and run a decent scheme.
Look at starters from the first games. Most are playing now besides the lbers. The o has had a lot more impactful injuries. There is just better development and the depth that comes with that
Coaches are responsible for developing players. They saw something in them enough to recruit them