valid concern  .. I am pretty sure they would add absolute anonmity ( in the spirit of #nostr)  in upcoming versions  .. 

Meanwhile you may use #fountain with a new nsec minted purely for #fountain   .. only  if you wish to ...   though I highly recommend because I want to support anyone to take the first step towards #nostr .. #goodKarma :-)  

  Even in the current version , it is 100x better than using Spotify  ..IMO ..