This is not included in the terms I see (it redirects to specific terms for my country
https://www.spotify.com/dk/legal/end-user-agreement/#s9)
However if I change the country id to "us" I get the same version as you, and I can see this new section 9.10.
If I google the new text, I find articles from yesterday about Spotify changing their terms in order to ban users using adblockers. So it appears that up until now, users has not had any agreement with Spotify that they will not block or circumvent ads.