This is a good thing in the context of the article (it even explicitly says "They’re not made to give you verifiable facts or to say 'I don’t know'" in a contex

This is a good thing in the context of the article (it even explicitly says "They’re not made to give you verifiable facts or to say 'I don’t know'" in a context which suggests this is in fact a bad trait). Better to return no code than to return crap code.