Sorry, I think you're going to have to let this one go. There are those psuedo-hermaphrodites in the DR who have no DHT and still are very much male.
Once you're a man, the chemical is not as neccessary. Your definition is correct but the application is not; further, the need for DHT is strongly in dispute. There is no reason to imply that a grown man will suddenly become a woman because he begins using Finasteride.
It could, maybe, possibly, sorta, mess you up, but according to the clinical data that chance is minimal. I think Finasteride is more than worthwhile for at least a brief trial.