I think you are missing the point: it's mainly to highlight that the models that most people use, i.e. free versions with default settings, output a large numbe

I think you are missing the point: it's mainly to highlight that the models that most people use, i.e. free versions with default settings, output a large number of factual errors, even when they are asked to base their answer to specific sources of information (as it's explained in their methodology document).