That, and guys tend to medicate their hormones too these days (finasteride). Yes, DHT is "just" a parallel path -- but when is biology ever that cut and dry, especially when there's so much money to be made?
Does anyone actually start taking finasteride before the emergence of sexuality, though? As far as I'm aware, treatment is usually initiated at age 21 or later. In that case, changes in sexuality should be very hard to miss, and we'd know by now.
Yeah, it's after puberty -- but are you so sure it would be hard to miss? Small effects with lots of confounding variables and an enormous profit incentive to miss seem easy to miss.
In order to do due diligence for this reply, I typed "finasteride" into Google Scholar, and the first suggestion was "finasteride side effects", which brings up 20,500 results, including highly cited papers dealing specifically with sexual side effects:
