I’ve never had any coaches mention that and don’t understand what this tip means. When I take back my racquet, I’m just thinking about where I’m going to hit the ball, how hard and with how much spin. I don’t think it’s a good idea to think about anything else. The problem often is that it is not easy to be so pure in concentration and think only about the target, pace and spin.
I don‘t mind thinking about technique, feel etc. before or after a point, but I certainly don’t want to be thinking of those things when I am hitting a shot. Even in practice, the best performance happens when you are in a state of flow (in the zone) where you are mindlessly executing your shots just thinking about target location, pace and spin.