It is because some officials at some times are letting some rules go unobserved that they become points of emphasis (hence the emphasis on these points). In addition, frankly, it isn't a stopwatch on the game itself but on the folderol between innings, i.e. the non-playing time. I agree that rules not being applied evenly at all times is an issue, but does that mean we refuse to ever try to tighten up on them in the future?