people have a right to speak their mind wherever they want; that's the basis of the internet, free expression.
Pretending this is a case of "spotify has an open platform that people can come speak on" is disingenuous, Spotify went out of their way and spent a ton of money to get the content he disapproves of on their platform.
(Comment aimed at a number of comments in this thread, including but not limited to the one I replied to)