She is trying to dishonestly present the argument that fats are unattractive case-by-case rather than universally. She is saying that some people might want to look and so therefore you, and you are presumed to be a minority in your opinion, should adjust your behaviour. She is trying to intimidate normal people by using a lie of omission that there is a general consensus that fat is attractive. "Look at this guy. He doesn't want to look! What a weirdo, right?" It reminds me of Tom Sawyer painting his fence. Essentially, she is trying to outsource her denial.