Different strokes, we all have different builds and different issues.
Actually I don’t think push or pull, I plant the paddle, use my legs, and rotate with very little independent arm action, for a “torso rotation stroke”. It works well with GP or wing. That said, I feel more “pull” that “push”. The “pushing” (airborne) arm/hand mostly resists, so that it doesn’t punch forward . Once the pushing arm is fully extended, the stroke is over, your power is spent.
The devil is in the details. If your big muscles and legs are doing the “heavy lifting” then they take the strain off your shoulders and smaller muscles. Arm paddling (using smaller muscles as the main movers) is like the tail trying to wag the dog…
Greg