The core claim has two parts: (1) Google removed Polymarket links from Google News and said the listing was an error, and (2) Polymarket had briefly appeared beside Reuters and The Guardian in search results on April 12. The first part is well supported by two validated reports: 'Polymarket removed from Google News after brief appearance' and 'Polymarket bets removed from Google News after brief appearance: Report'. Both specifically quote or paraphrase Google's statement, via The Verge, that the site 'briefly appeared in Google News in error' and 'is no longer surfacing in News.' The second part is also consistently reported in those same two validated articles, which cite Futurism's example query involving the Strait of Hormuz and say the result appeared alongside Reuters and The Guardian. However, because direct fetches of 'https://www.theverge.com/tech/910691/google-news-polymarket-bets-error' and 'https://futurism.com/future-society/google-news-polymarket' failed in this run, the evidence for the exact wording and the Reuters/Guardian placement is one step removed rather than directly validated from the originating reports. That makes the claim likely true rather than fully confirmed at high confidence.