>>53926347Thanks to JN, champion and world champion mean nothing. A 10 year old with pokemon he hatched/caught two weeks ago can become the strongest trainer in the world, so the weight of Elite 4, which is less than champion, means less than nothing.
As for before JN, nobody brought it up for the same reason nobody really brings up Paul vs Cynthia. It's an elite trainer demolishing a non-elite trainer, as was expected back then when the writing had some semblance of quality to it. It's not surprising.