The article doesn't say they used Bing. It says ChatGPT.
> Different chatbots, different answers
> The BBC was able to confirm Mr Hood's claims by asking the publicly available version of ChatGPT on OpenAI's website about the role he had in the Securency scandal.
> ... But the same (incorrect) result does not appear in the newer version of ChatGPT which is integrated into Microsoft's Bing search engine.
> It correctly identifies him as a whistleblower, and specifically says he "was not involved in the payment of bribes... as claimed by an AI chatbot called ChatGPT".