While I agree to a point here it is just so easy to take Royce out of the play. He dies on literally every screen and is never there to rebound when Rudy covers for him. It's huge part of the problem with Gobert. If he shows he knows his man will roll and get to the basket unencumbered. If the shot is missed there is no one to rebound. That and royces reluctance to shoot an open shot handcuffs us on both ends.
If you look at the numbers his rebounding has actually been good in the clutch, but I completely agree that we could use more rebounding (Bogey is a terrible rebounder). His shooting aversion is Royce's biggest issue. Even then, he gets so few opportunities to even touch the ball it isn't close to the root cause of our melt downs.