Some people like to talk about “category fraud” in the acting categories. It is generally a fairly semantic debate. Is Lakeith Stanfield the lead of Judas and the Black Messiah? Why, then, is he nominated with Daniel Kaluuya in Supporting? Does that mean there is no lead actor in the film?
But it’s just a matter of campaigning. In general, it is easier to get your film’s actor nominated in a supporting category than it is the lead category. In ensemble films, it is fairly easy to make the argument that anyone is a supporting performance, just based on screentime and/or billing. I’d put Stanfield in the lead category, but I’m also just happy to see him nominated. He and Kaluuya both are two of the best actors working today.