If you want to be on Spotify's platform, you have to play by their rules, 100%. There is/was a number of artist whose work was not on Spotify for whatever reason.

They specifically said so in their statement: "We have detailed content policies in place and we’ve removed over 20,000 podcast episodes related to COVID since the start of the pandemic." [0]

They just won't touch their golden goose.

And remember, they're not just not removing Rogan's misinformation, they're producing and promoting it.

[0]: https://deadline.com/2022/01/neil-young-leaving-spotify-joe-...