I agree with you, but that's not what the post claims. From the article:
"A significant effort was also devoted to enhancing the model’s reasoning capabilities. (...) the new Mistral Large 2 is trained to acknowledge when it cannot find solutions or does not have sufficient information to provide a confident answer."
Words like "reasoning capabilities" and "acknowledge when it does not have enough information" have meanings. If Mistral doesn't add footnotes to those assertions then, IMO, they don't get to backtrack when simple examples show the opposite.
"A significant effort was also devoted to enhancing the model’s reasoning capabilities. (...) the new Mistral Large 2 is trained to acknowledge when it cannot find solutions or does not have sufficient information to provide a confident answer."
Words like "reasoning capabilities" and "acknowledge when it does not have enough information" have meanings. If Mistral doesn't add footnotes to those assertions then, IMO, they don't get to backtrack when simple examples show the opposite.