Taken to its logical extreme (which I realize is unfair to your point), what you are suggesting is "people should be able to post anything about anyone at any time and spotify should host it", which I think is ridiculous on its face? Should Spotify be hosting a Daily Stormer podcast? How about The Daily Shoah? [1]

I don't think they should. Let's be honest; this is corporate America. It's not about "principles", it's about money. If Spotify thinks that long-term hosting Joe Rogan is going to cost them more money, they're going to get rid of it.

[1] Do not look either of these things up. They are both outright white supremacist propaganda. You have been warned.