Should middle-aged and elderly people learn interval chords when learning accordion?

Middle-aged and elderly people should learn interval chords when learning accordion. According to relevant information, learning accordion requires playing melody and chord with your right hand, and also operating a sound changer. The left hand not only pushes and pulls the bellows to control the volume and expression, but also plays the invisible bass button by feeling. As long as you learn the accordion, you must learn interval chords, otherwise you can't play the whole song.