They do get reviews from the league office.
But also bear in mind, a lot of what we think are the rules are solely umpire calls. For example, ask any amateur coach about what happens when a player making a taf drops the ball and he will tell you the runner is safe. That's not the rule. The rule is it becomes the umpires call if the runner is out or not. (Many umpires do use the guideline that the runner is safe when the ball is dropped during a tag, but the rule is that is it their call.)