Cross sex hormones simply change some secondary sex characteristics like growing facial hair or fat distribution.
That's just bollocks. One day you claim one thing, another day the opposite thing. One day drugs are dangerous, the next day you trivialise their effects.
The truth about cross sex hormones for trans women is that each individual has differing experiences. In the case of trans women cross sex hormones cause tremendous atrophy of the genitals, and they develop breast tissue. These are not simply changing secondary sex characteristics. Hormones also affect brain function. Try listening to post-menopausal women. Try listening to post-menopausal men talking about their experiences of falling testosterone levels.
When trans women take cross sex hormones, it has little to no effect on facial hair, it continues to grow because like the lower voice, that mechanism has been switched on and not reversed. Facial hair is managed by a range of methods, but not hormone treatment.
A young female acquaintance of mine is embarrassed by a hairy chin, it's a naturally occurring hormonal thing. Does this place her in a subset of women?