"young men who experience early sexual arousal either through gender role play or use of female items of clothing "
It is easy to underestimate the importance of imprinting, and even easier to misinterpret and misunderstand the twisty turns it can take during a lifelong dragon chase (nice phrase, Isha). It's the only thing of course, but it is something very powerful, and often suppressed from conscious memory because of the shaming our culture lays onto adolescent sexuality. One is require to take responsibility for forces one cannot understand let alone explain. The argument for "nature" can be seen as a desire to avoid being blamed and shamed by finding a cause that lies outside personal responsibility. My 2 cents.
