> Under a playlist you get a list of suggested songs, the UI element looks like a "regular song", but unlike every other "song" element the user has been trained to recognize, the "swipe right to queue" does not apply to these elements. For some reason.

If I remember correctly, it has a plus on the side to add it to the playlist. Clearly different I guess (and why would you want to listen to a song before adding it to the playlist amirite?). I also love the way you have to refresh a list to get 3 new songs instead of just getting a scrolling list where you can go back.