If you're too scared to face the fastest pitcher in the league, then maybe YOU should leave the league! I don't think you require the pitcher to leave.
40 mph is not that hard to hit - it takes practice for kids, but batting cages and pitching machines are available where you can raise your game. My 10 yr old nephew was hitting them pretty easily after a few trips to the cages.
I was moved to JV football as a Freshman. I was fast and quick enough, but it was not fun getting hit by someone > 200 lbs. That convinced me to quit.
OTOH, I hung on in my abstract math classes, learned how to study, and eventually outperformed the Eastern European wunderkids.
Edit - I think there is another issue here - the normalization of mediocrity - of under performance - sports on one hand enforce compliance, but they also force one to raise one's game.
