A Nintendo Switch Mini or Nintendo Switch Pocket handheld console could be in the pipeline according to a popular X-based leaker. It seems the source has dug up numerous patents that point to a miniature Switch, although patents often lead to nothing more than the public description of an idea. However, this hasn’t stopped the leaker predicting a price and release date for a Switch Mini.
I don’t think this will work to compete with the Deck.
Nintendo is probably not even considering the steam deck a challenger.
To their own detriment, then.