So his assessment isn't wrong, i.e. the longer we hold the ball the less the other team has it, which is precisely what this team is doing.
BUT, he's dead wrong in the fact that his desire to do so is forcing his offense to be less efficient because they're rushing plays. It's one thing to get the play in with 20 seconds on the clock and have Lamar snap it at 2-3 seconds. That's not an issue. The issue is when the offense is rushing to the line and making mistakes because they don't have enough time to operate the play as they want to.
He can achieve both. He can get the plays in quicker AND control the clock. That's what they should be doing.