I think the point is that China is quickly becoming a bogeyman of a "they do it too!" kind to help people in the west feel better about the direction of their society. Ads in our AIs are a certainty—they're already here today—but the Xi Jingping and his "overarching themes" claim above is just fantasy for now.
You're illustrating something related but separate. There's no disagreement here that they perform basic censorship.
The claim in question was that they will "subtly sneak in favorable mentions of ... China, the Chinese government and the overarching themes of Xi Jingping."
