Transsexualism is logically incoherent. This is why they had to abolish this term and use Transgenderism instead. Not only is it impossible to "transition" ones sex, but transsexualism denotes a lack of necessary attributes required to be X-sex. If X-sex lacks necessary attributes, it does not contain the material necessary to be X-sex. Transgenderism states that "gender is fluid and can be changed".

The is inconsistent with the sex essentialist claims of transsexualism, hence, why they had to choose one of the other. Either gender is "not fluid" and "fixed" only 'two sexes' can exist - thus transsexualism that augments themselves to adhere as closely as possible to the appropriate sex or gender is "fluid" and not fixed, thus no sex essentialism. But, if this were the case, a transition would not be required in the first place.

There is no interesting difference between "gender fluid" and "transgenderism", and the existence of these two also implies that Transsexualism does not exist. Which is false. The ACTUAL dysmorphic sex essentialist transsexuals have been silenced under the guise of faux "transgenderism". The correct term would be "Transsexualism" not transgenderism, but acknowledging that invalides all these unicorns, and in fact appeals directly to the facts. The facts that body idealism and genital subjectivism is conceptionally and logically incoherent and contradictory all across the board, and this fact makes a direct challenge realness of 'trans identity' at all. A direct appeal to a mind-based issue; not a physical one, and to acknowledge the realness of Transsexualism means also appealing to the fact it is so riddled with logical error and a host of inconsistencies, it is easier to just say, "whatever works works", and "whatever you feel like, sex does not exist" hence we are all unicorns while still nitpicking off sex essentialist viewpoints to ignore the reality of situation.

Transsexualism and transgenderism cannot coexist at the same time and both be logically consistent, because Transsexualism makes a direct appeal to sex essentialism while attempting to abolish it. These contradictions they attempted to avoid with "Transgenderism" but still shows as contradictory in action, because only transsexualism has the strongest argument, if any at all.

Transgenderism also challenges "Agenderism". If Agenderism and "gender neutral" exists, then transgenderism is incoherent and does not exist.

There is also no meaningful distinction between gender fluidity and "transgenderism and they like it this way in this hocus pocus of genital subjectivism.

P1: All males and females must contain all the necessary biological attributes to be 'male' and female'.

P2: All 'males' and 'females' contain the necessary biological attributes needed "to be" 'male' and female'.

P3: A male that lacks necessary attributes necessary for to be considered 'female' is not a female.

P4: A female that contains both necessary attributes of both 'female' and 'male' is neither male or female, but intersex. QED.

P1: "Transition" denotes passing of all necessary attributes from one to another.

P2: All necessary biological attributes are 'fixed' at birth.

P3: Biological attributes cannot be 'changed' without artificial intervention/frequent injections (i.e. lacks necessary attributes) or augmentation (mimicking), therefore static biological sex cannot 'change' if necessary attributes cannot transition.

P4: "Transsexualism" (and 'trans' - genderism) is therefore incoherent. QED.