Kimstu,
Well, no, I’m just emphasizing that it’s relatively easy and natural, based on human hormone levels, to change many typical physical characteristics across gender categories. Which is not at all the case for changing one’s physical characteristics across species categories, which is why your analogy between transgender identity and “otherkin” non-human identities is not very persuasive.
There are plenty of trans people who could never pass as the opposite sex (because they are built like titans), so what you’re asserting as a general case
doesn’t apply to a lot of people.
But the real flaw of your argument in a logical sense is that you are connecting gender to a biological and physical reference point, while at the same time supporting a self-determined definition for woman that doesn’t have anything biological or physical behind it. If woman = whatever a person wants it to be, then the ease at taking estrogen to grow boobs and acquire a feminine fat distribution is a red herring.
How convenient that the importance of a female reproductive system and its outputs is discounted the minute someone argues it needs to be in the definition that society uses for woman. But when the argument shift to something else, suddenly the ability for males to mimic certain female reproductive system outputs is relevant.
As your first paragraph correctly states, I certainly am not in the least trying to argue that anybody, whether transgender or cisgender, should be expected or required to make their physical characteristics conventionally gender-conforming.
But you are implying that in your attempt to explain why gender identity is not comparable to species identity.
There may be a day that otherkins can acquire features of their identified species. Gene technology is making advancements everyday. I can totally imagine that one day, people who identify as part-chimpanzee, for instance, can take a cocktail of genes or gene products and grow a full body of chimpanzee hair and other attributes.
This still wouldn’t make them chimpanzees.