Couldn't agree more. The kind of "unprofessionalism" that brings us easter eggs and silly features should come from a place of positivity and joy, not from a place of negativity and unkindness to others.
I wouldn't add a feature like this simply because it's not nice to mock people, regardless of what I think about the music they like.
I wouldn't add a feature like this simply because it's not nice to mock people, regardless of what I think about the music they like.