These are guys who are not transsexual, but are taking extreme measures to combat scalp hair loss. Many of these people take a far higher dose of Spiro than the mtf's on here, and many get Spiro from the internet without a doctor's prescription (sometimes from abroad).
Clearly, this is not recommended, but it just encourages me in thinking that perhaps Spiro is not as dangerous as you would think?
I have frequented hair loss sites for a few years, and do not remember hearing of someone getting serious side effects from Spiro. Nowadays, millions of men around the world are also taking Avodart/Dutasteride (stronger version of Propecia/Finasteride) just to stop scalp hair loss.
I have thought of getting on topical Spiro, but it seems like the results of that are not too good.