When I talk to my 14yo nephew about the Star Wars movies, he’s not really that big a fan and has a hard time remembering which Episode number goes by which subtitle. At one point, he asked me why I don’t just call them by their episode numbers, and I said that it wasn’t until the prequels came out that their numbers even were on the box or that Star Wars was marketed as A New Hope.
Then I showed him images of OT posters and VHS boxes to prove my point.