By that logic, you are never allowed to notice the unbalanced application of a rule or principle.
Slightly off-topic, most "logical fallacies" actually have very important heuristic uses. Just to get the ball rolling, "ad hominem" becomes extremely useful in a world in which we have limited access to full information, and have to constantly evaluate the reliability of outside parties.
That only counts for logical arguments. There is an assumption that if a reason is given for firing someone, anyone should be fired under the same circumstances on basis of fair treatment.
Slightly off-topic, most "logical fallacies" actually have very important heuristic uses. Just to get the ball rolling, "ad hominem" becomes extremely useful in a world in which we have limited access to full information, and have to constantly evaluate the reliability of outside parties.