IMO its just that the models are very nondeterministic, and people get very different kinds of responses from it. I met a number of people who tried it when it first came out and it was just useless so they stopped trying it, other people (including me) got gobsmacking great responses and it felt like AGI was around the corner, but after enough coin flips your luck runs out and you get some lazy responses. Some people have more luck than others and wonder why everyone around them says it's trash.