This is not a trivial problem, and the answers matter. ... suggests that we have learned something about rationality.

I actually agree with this completely, and I think your analysis is rather insightful. Your conclusion seems to be that PUA topics are deserving of further study and analysis, and I have no problem with that... I only have a problem with assuming PUA-isms to be true, and citing them as "everybody knows that..." examples when illustrating completely unrelated points.