It looks like Nintendo has plans to bring SNES games to the Switch, after a patent for the original controller was discovered.
Back in the days of the Wii you could play almost every major Nintendo game ever released on the NES and SNES, as well as games from multiple other non-Nintendo consoles. There was also a lot of N64 games and what seemed to be a concerted attempt to create as wide a library of retro games as possible.
But when the Wii was replaced by the Wii U the Virtual Console suddenly shrank down to a shadow of its former self and now doesnt exist at all on the Switch.
Instead, all you get is a selection of NES games if you subscribe to the Nintendo Switch Online service, but at least it looks like SNES games are finally going to be added to that mix.
Although its usually best not to assume anything of Nintendo theres really only one obvious use for that controller and thats for playing retro games.