Immediately grabbing the pocketed ball that needs to be spotted is an old school thing to do. I learned to do it and it's a good habit to start. I frequently see players forget to spot that ball.
Tony is doing the same thing. Yesterday, Dennis made a ball in his hole and one in the side, Tony immediately picked up the ball that dropped in the side.
Drop pockets could make a difference but when you have a ball return they all go to the same place. Easier to forget if you don't get it right away.