I agree here. On curves/screws ie side to side movement the hitter is tracking the ball, not anticipating a sudden break. So they've just changed the contact point of the tracked pitch. They've also widened the strike zone in and out effectively, and made it tougher to catch up with high pitches. So as someone said above they've create different weakness so exploit THOSE.Pitches aren’t thrown straight and then suddenly move at the last second.
You can’t move up in the box to offset movement. Physics doesn’t work like that.
Moving up is best I think against a good drop-ball pitcher because now you either catch it belt high or they have to start bouncing it before the plate in which case you lay off.