You continue to do this whenever someone mentions speed, speed and command are NOT MUTUALLY EXCLUSIVE events. If Player X can go from 65 to 70 mph and maintain command by leaping, yeah, I'd advocate giving it a try. The greatest risk is not taking one.
No they are not mutually exclusive. But you are advocating removal of BI which I think you will agree is not a good thing. Again, if you had skin in the game would you completely change a pitchers mechanics who is already in the top 1% in the game? If it were your DD are you going to let someone use them as a lab rat to "give it a try"?