It seems to be the result of analyzing 152.000 unemployment case histories. While the outcome is rather coarse grained I have a feeling it wouldn't be too far of reality for a quick risk assessment.

You can say e.g. the resulting model surfaces 'ageist' rules, but isn't that just a reflection of reality? Jobs chances for the average >56,5yo are indeed pretty slim, and not just in Denmark. Should the model lie about that?