Here’s a link to the CNN story. Copyright office has determined that dance cannot be copyrighted. While this certainly isn’t the final word on the matter, it’s a pretty solid blow to the case against Fortnite et al.
It was refused on the grounds that it’s a dance move not a full choreographed work. It’s additionally complicated in whether or not he had the right to do so, but this ruling makes that detail irrelevant. Doesn’t matter who has the right to copyright it it it can’t be copyrighted.