There have probably been other songs written about Ron Rivera. But those songs were probably about a stuffed-shirt football coach, one who played by the rules written on the card, using fourth downs only punting.
That Ron is dead. Faced with the a choice of a pink slip or actually trying to win games, Riverboat Ron emerged. A new man, needed a new song ... or at least a remake of an old classic complete with awkward PhotoShop and comedic singing voice.
Also note that he gets the Maverick treatment here, putting all riverboat gambling references into one. Nicely done, internet.