He's making a statement that Joe Rogan is polluting our minds. Spotify is promoting and paying Rogan, with an exclusive contract. Will this change anything? We'll see, probably not. But I'm sure Neil Young doesn't care if his music isn't on Spotify, as long as they're funding Rogan's BS.
I'm reminded of a line from The Prophet:
“Think you the spirit is a still pool which you can trouble with a staff?”
No one's mind is polluted any other way than one's own carelessness. Somehow you've managed to discern that Rogan's information is polluting and manage to survive with a mind that is still capable of good reason - I'm sure you think so. Why do you not credit others with this ability?
But we're all susceptible to suggestion and sensationalism, and some to a greater degree. The fact that this company is paying him millions, and probably making more, creates a perverse incentive to sustain and promote him and his nonsense.
Then we can move on to the fallacy of the infallibility of judgement (which ties in nicely with the quote you provided) that J.S. Mill points out in his arguments against censorship.
If it’s innate that would be interesting but it would be even better for us all if you would share your methods and then we could all benefit.
I would counter that possibly the greatest of all philosophers, Socrates, used this very technique (that now bears his name) to uncover the flaws in someone’s thinking.
So, the question stands.