I agree, Jurgens was a modernist, and shouldn't be used as an authority. That makes it all the more odd that the Dimonds would quote him as one. Jurgens actually goes on in the next two paragraphs of that footnote to call Limbo "generous but questionable", and then he applies BOD to infants, with "a desire supplied by the desire of the Church herself." Whatever one may think of BOD, it was always denied to infants in traditional teachings, barring some rare source.