I think the notion that it's the worst piece of software is a bit of a stretch here. I've used various streaming music players and Spotify has been the best by far. Doesn't mean it's perfect.
I get that not all edge cases (eg swipe gestures) are bullet proof but that doesn't make it terrible software.
I get that not all edge cases (eg swipe gestures) are bullet proof but that doesn't make it terrible software.