This really is all that needs to be said here.
Race is a social construct, one that changes over time and between cultures. Gender dysphoria is a well-documented thing that’s been seen in multiple cultures over multiple time periods, and there’s oodles of scientific evidence demonstrating that gender reassignment surgeries typically help trans people significantly.
I’d encourage anyone with a serious interest in this to just google this stuff and read up on what reputable scientific sources say on the subject.
One could argue that gender dysphoria has been turned into a social construct.
Look at the options facebook has (which could be grouped into way less categories, but socially some people get offended with trans vs transgender vs transsexual so they duplicate stuff for the sake of a feelings, when will this list stop growing? when will it become more realistic?):
Female to male trans man
Female to male transgender man
Female to male transsexual man
Male to female trans woman
Male to female transgender woman
Male to female transsexual woman
Female to Male
Male to Female