The kinetic chain is probably the most important aspect of pitching. Proper mechanics will prevent injuries and having your body work both efficiently and safely is key to a successful career
As a non-pitcher the only part I really understand is that he’s more over the top now, in all respects. Also-hitting MLB pitching is the hardest thing in sports. Difficult enough just to make contact, let alone hit the ball fair and with decent exit velocity, etc.
nah, it's similar to lifting weights, once you learn how to lift correctly, its amazing how much more you can actually lift in a short period, good mechanics and technique can improve a LOT