There will surely be controversy for Spotify now, given that Rogan has had such guests in the past. I could be overly optimistic, but I would guess that means that people at Spotify have considered the issue and decided they're okay with it.

(And I'm sure you know this, but I think we should be explicit about it in this context: Joe Rogan is extraordinarily popular, with JRE being one of the most followed podcasts in the country. He's not some niche voice that Spotify could have failed to do due diligence on or silence without expecting blowback.)