It has EVERYTHING to do with coaching.
Proper coaching provides the confidence to play explosively without tentativeness. Tentativeness is often confused with laziness and “suck”.
When coaches prove themselves to be 1. Incompetent or 2. Weak, the team loses confidence and emotion to play explosively because they don’t truly believe in what they are doing.
Some guys, the true leaders, can fight through this, but most people aren’t true leaders, they are just ordinary, and that’s ok. The problem comes when leadership is poor.
Think of how the military can turn the vast majority men into disciplined soldiers, even when they are ****birds in the civilian world. They are able to do this because they know most people are followers and will go where they are lead if the leadership is competent.
The same principle applies to football. We expect players to rise to the occasion, but they fall to their training. The military created that saying and it is 100% truth.
Diaz himself shows what good leadership and a decent plan can provide for unit turning araound. He just isn’t ready to lead a team, and may never be.