This is just me speculating here, but you guys have heard the saying that there is no such thing as bad publicity, right?
Spotify is going to use leftist rage to their benefit. It will create a massive amplification of the Streisand effect as people flock to Spotify and Joe Rogan to see what all the insanity is about, because people appreciate and recognize Joe Rogan for his world-famous show. The massive amount of attention will drive in MORE listeners, not less, even if some small percentage of lefties cancel out of rage.
Remember when they kicked off Infowars? I member.