They don't cite evidence. And when a domain expert challenges the claim, they disappear. The problem is not one professor. The problem is that "AI translates perfectly" now sits in a peer-reviewed reference work that lawyers, policymakers, and researchers will cite for years. And the people who put it there won't defend it. If you make a claim about an entire profession in a Cambridge publication, you should be willing to stand behind it when that profession asks questions.