Earlier quoted context omitted.
Every sport hits this sort of threshold where they ban optimization. Swimming did it with 'sharkskin' suits and long distance running with Nike's Alphafly and Vaporfly shoes. Maybe that's where advanced baseball bats will end up eventually.
Which is so silly. I would love to watch a sport where all the athletes are on cutting edge, dangerously experimental PEDs and all the equipment is engineered to the very limits of nature. We draw oddly arbitrary lines what is and isn’t ok in sports.
Sports should be for those doing them, and then if people end up caring and commercial competitions end up viable, then that's a bonus but we shouldn't design them for entertainment of the audience.
Customization of equipment should always be fine unless it increases injury risk or completely destroys the game.