Based on what I'm seeing in the video, the robot isn't slicing the paddle in a way that would impart much spin other than what's already there. This is essentia

Based on what I'm seeing in the video, the robot isn't slicing the paddle in a way that would impart much spin other than what's already there. This is essentially a defensive play style. That's not to say that the ball doesn't have spin. I play with a lot of spin, and a recent level up in my game was that I realized that when I put spin on the ball and my opponent returns it without slicing, I've got to account for the spin I put on it because it's still there. You can get pretty dang far with a primarily defensive style, though. I was recently at an informal local tournament where the 2nd place guy had basically one serve and an insane ability to return shots. A lot of the times he scored in the final game were where his opponent hit a shot with such insane speed and spin that when when he returned it, his opponent couldn't defend the residual speed/spin of his own shot.