It’s not often I agree with Delzethin (especially his… “interesting” character choices) But I’d say he’s onto something with the Switch 2 Edition idea. We still don’t know what that 2D action game being developed by Bamco Studio 2/S is, and I don’t think it’s implausible for something Smash related to be in development alongside Kirby Air Riders. In fact, on Sakurai’s Youtube video on the development of Kirby Air Ride, he mentioned that the reason he chose to make a racing game was because he wanted to develop a game more quickly than a standard action game.
Because of the relatively shorter development time of the genre, and the fact that we know this is the secret project he’s been working on since 2022, who’s to say that he also couldn’t be working on something else in the meantime?
Also Delzethin mirrored my idea of Smash trying to eventually achieve 100 characters in a single roster, which I found kinda funny.