Sometimes we over-complicate things. Like the French with sauces or humans with trying to over-complicate their emotions. The Italians, by contrast, know how to keep things simple - certainly with their food, not so much with their love lives.
Good evening wear is a little the same. There is nothing wrong with peacocking black tie, it has a time and a place. But it was very refreshing to see the top of the pops at the Oscars wearing classic elegant black tie. A nice segue from that boho Hollywood look where black shirts are worn with black long satin neck ties and a jacket that is no de riguer, eg: a notched lapel.