When a human being or other creature with opposable thumbs strums a guitar or similarly-shaped, differently-sized instrument, it's generally taught that their dominant hand is meant to be pressing down on the strings over the frets while their non-dominant hand strums the strings further down the body of the guitar. Wouldn't playing guitar be more effective if the musician was carefully constructing chords with their dominant hand while strumming with their non-dominant hand?
i'm quite sure it could be learned either way