As above - I've never read any such claim that does not have methodological problems that prevent the result from being generalisable.

No kidding. When I first looked into the research on pedophilia, the first thing I noticed was how laughable the methodology was. I was much more inclined to trust in my own experience and the experiences mentioned by others in the pedophile community, when I saw what kind of work was being done by these Z-list "researchers".