Ohtani went down to Silver yet he still has a 66 speed

Why doesn't SDS care to fix this? He is clearly much faster.

Because his fastball was going at 66 that’s why.
I’ll see myself out

I heard they do it based on statcast mph or something like that. Like lindor is faster than 50 something but since last year he played mostly hurt. He ran slower and therefore got worse speed this year