Originally Posted by ArlingtonTexan
The reason the center is further up is that he allowed to technically be in the neurtral zone by holding/snapping the ball. The space (from sideline to sideline) the ball occupies is considered the neutral zone. Even having a hand in this zone (by offense or defense) is considered off-sides. The OLmen are actually on the line of scrimmage and center is the off one.
That's not accurate.
Linemen are taught to line up like that so you have room to operate when the ball is snapped. You can pull, pass set, or move laterally...or have more room to fire off.
Also, you will notice that in short yardage situations linemen will move further up and crowd the ball and there's no penalty.
They crowd the ball because when you need a yard or an inch you don't want to concede any ground.