At some point they don't want to put their milb staffs in a judgement call situation. Everywhere in life has these arbitrary lines, everywhere. Is someone who is 17 years and 364 days old less competent to vote than someone a day older? Of course not. But what is the alternative? Every polling station makes their best judgment call on who looks mature enough to vote? Is 55 mph safe, while 56 is reckless? Are 10 items few enough to breeze through the express checkout, but 11 would grind it to a halt? Obviously not, but it's more efficient than telling every cashier to just pick and choose who can use that checkout. The FO can't be in constant contact with every milb staff during every inning of every game. In general, they don't want pitchers throwing too many pitches in one stressful inning. Of course 35 pitches has little significant difference from 34 or 36, but the alternative, trying to be involved in a judgment call every time across multiple levels all playing games every day would be just as silly. I guess I don't understand what the controversy is. What would your policy be if you were in charge of the organization?