What is the sense of having a rulebook if you're not going to follow it? Let all the umpires use their best judgement and see what kind of consistency you get. Best judgement will run the gamut i.e., I can recognize pornography when I see it. An umpire that finds team cheers distracting could toss the entire bench. All infielders have to wear a fielder's mask. Shaved bats are allowed because they don't improve performance that much and the wind is blowing in. The concession stand operator is tossed because they served a spectator an over-priced hot dog that was half cooked. The strike zone will vary for each team based on ability and score. The look back rule could be overlooked because it is stupid. No running on dropped third strikes because the catcher isn't feeling well. Your kid is tossed because they're running around disturbing other spectators. Your dog is tossed because its not a cat. Anarchy.
Who said they shouldn't follow the rule book? Unless of course they don't want to enforce illegal pitches.... LOL.