As I am new to this site, please let me know if I happen to (unknowingly) offend or otherwise err.
I was delighted to see the term "Two Spirits," as I have had some familiarity with this concept for some twenty years, and the fact that it is apparently relatively common in some Native American (and other indigenous peoples) traditions and culture...and understand that these souls, as you suggest, often played a keenly important role as healer, shaman or psychotherapist. When I first heard of it, as it happens, it really "zinged me," i.e., I felt a strong resonance with the concept.
The article was one which somewhat alienated me. As a health professional, I happen to know that the explanation is somewhat simplistic. I DID like the fact that the author mentioned that androgenic hormones play a part in both males and females (and in libido). I did not like the description of males as having "sex on the brain" 100% of the time, and being essentially violent and predatory. Now, from an archetypal standpoint, women tend to be more supportive and sensitive (and into feelings), and men tend to be more assertive/aggressive, goal-oriented (and are often have a "disconnect" with their feelings...and subtle concepts)(We could also mention right-brain v. left-brain bias!), but there is vast individual variability, and psychological aberration plays a big role here too.