That’s fair, but surely the concept of sharing music with friends isn’t so crazy? Not saying it was necessarily handled well here, but it seems like a feature many would and do want.
Copy a link send it as an IM, that already worked with ICQ. Update your status message in your message client, manually or possibly provide a client side API to do that, pretty sure there are scripts that do that for pidgin / Amarok, it also is definitely possible on macOS using Automator. There is no reason to involve a server other than possibly platforms like iOS not allowing interactions between apps in this way, which I doubt.
Yeah, but that's the thing: even if you do want to broadcast to your friends that you're listening to BW, that doesn't necessitate access to all your PMs! That just means write-to-wall or -to-updates privileges.
I apologize if my tone was not right... to be clear, I use Spotify exactly as you describe (different choices though) and am as baffled as you about people using those other ways.
I interpreted your comment as a joke, but could see how that could be unclear. Tone is hard on the internet, probably best to explicitly say when you're being sarcastic. :-)