screw this theory, it is proven that you can prune for yield. and FYI...we are playing mother nature in this arena. i get more than 200% when pruned properly. you can top up to a week from flower. this allows all of the other branches to grow taller. then they will almost all be at the same level, and nearest to the light. clip awayLeave your plants alone and let them grow. When you have more plants than you need you can experiment.
Peace and happy growing.
PS If you look at the Olympics they don't remove parts of the athlete they don't need. Nature knows the best way to grow and that's as a whole plant.