What a dumb article. The picture of the sandwich is essentially just a picture of bread. You can’t see what’s inside. A human wouldn’t be able to tell you. These are essentially AI hit pieces.
Also, if LLMs worked as they are often advertised, they should have easily been able to answer "there isn't enough information in this picture to give you an accurate estimate. Try taking a picture of the label, or at least of the inside of the sandwich, or list the ingredients used".
The GP, and much of the thread, is basically acting as if it should be obvious to anyone who is not an idiot that this is not possible to do precisely; and that the researcher just made up some use case that LLMs can't do and wrote a paper about it to disparage AI.
Why assume trick ingredients?