Oh, wait, wait, I think I misunderstood some stuff. From what I read in this thread, I thought that SS was already in the release version of the game but that it was just so laggy that it was pretty much unusable. But I guess it's actually still in testing and not in the public release of the game? (I haven't been around that long so I didn't see any posts of yours talking about the Switch SS being in the "beta branch", so to say).
Either way, I guess I understand Nsk1341's complaints better now, since it's literally something that's advertised but is not actually in the final version of the game.
Not saying you should just release it now, though. Personally, I'm the kind of player that prefers stuff to get delayed so it can get polished instead of it being rushed out and full of bugs. But you should definitely rectify the game info so it doesn't mention the SS (at least on eShop, I guess it'll take more time to do it on the physical copies).