And my uncle fathered children in his '60's. I'm not sure, though, what the point of anecdotal evidence plays in this discussion.
Show some scientific (not anecdotal) evidence that conclusions were agenda driven, and you'll be everyone's hero.
Without the raw data, that's impossible.
A good indication of an agenda, however, is the built-in gap left undiscussed for men between 30 and 40...
Why not, for instance graph the continuous age spectrum? Did they find gaps or discontinuities?