Grok aggregates with government sponsored 'news's sources that corrupt it's dataset.
Remember when Nancy Pelosi discussed the wrap up smear? Where one news outlet reports on another news outlet's report of a report from yet another outlet and now we have three sources preaching the exact same thing making it seem like confirmation of a 'fact'?
Legacy media is corrupting Ai datasets in the exact same manor. Grok will often quote CBC, SPLC, and even ADL as authorities on a subject matter ignoring it's bias and treating it as abject factual knowledge. And of course there also academic journals in the social sciences that do much the same.