A coach reacting on pure emotion isn't an excuse. He's getting paid millions to be the one guy on the sideline who can't lose his wits.
The refs are getting payed outrageous amounts of money to get an easy call like that correct
Plus, it can be used as an unfair tactic to extend the amount of time that the booth has to review it.
No one thinks they didn't deserve a penalty
No way should that null a review from the booth. Hell, take a time out, give them 15 yards, but review the damn play