Earlier quoted context omitted.
> Not really, just biological reality. People can't actually change their sex (only their gender expression), so 'male lesbian' is a statement of self-contradiction. This is where you are mistaken. You can change your sex with a sex reassignment surgery. While gender is identity based, sex is defined via the phenotypes (physical characteristics). If you make the alterations necessary to match the physical characteris…
"You become that sex for all intents and purposes"... i'd argue that you are perceived as that sex for all intents and purposes. Having SRS you still lack the ability to carry a baby in terms of impregnation for MTF, which most biological women are automatically capable of unless they have some extraneous condition/syndrome/etc. In addition I often wonder how the cocktail of female hormones including estrogen (versus…
How is this any different than SRS? You can call it a condition or whatever but it results in the exact same state.
> In addition I often wonder how the cocktail of female hormones including estrogen (versus mostly testosterone in biological males) play a part in neurological development and influence as a prepubescent.
It does play a significant part however it plays an even bigger part in the actual operation of the brain itself. So people who transition find themselves much closer neurologically to the sex with which they are hormonally equivalent to than their original sex.
Now take in the consideration of trans individuals who attempt to transition during or before puberty. Is there a difference now? The lasting effects (of which none actually disqualify you from the sex you transition to) are lesser so it should be even harder to differentiate now.
The point being, a MTF individual with SRS and HRT is of the female sex and vice versa for FTM individuals. They may be their sex with additional caveats or medical considerations but they are that sex. If we want to be scientific about it there is fundamentally no difference between a transitioned individual and any number of individuals of that sex who have some disorder or circumstance that gives them the identical physical characteristics.