This is incorrect. All else equal, a higher spin rate produces fewer hits than even a higher pitch speed. Banned substances can increase spin rate by ~500 rpm w

This is incorrect. All else equal, a higher spin rate produces fewer hits than even a higher pitch speed. Banned substances can increase spin rate by ~500 rpm with little effort, meaning everyone doing it allows fewer hits. You’re correct that there are a lot of other factors at play, but foreign substance is proven to reduce hits, and increase players hit by balls (highest it’s ever been)