As is often the case, you’re asking an interesting question hidden beneath some of the worst possible phrasing you’ll find online lol

At least, if I’m getting your gist, you’re asking “if we ignore that trans people nare fundamentally trans from birth, wouldn’t it be fair to compare it to any given choice a person makes?”

Assuming I’m reading you right, that’s a good question, but it has a major flaw in it. Comparing transness to a recreational drug is just bad. For a good comparison that fits the restrictions on your thought experiment, you’d want to compare it to steroids, “back room” plastic surgery, or other body altering decisions that are currently not allowed under law, and are also socially stigmatized, as well as causing permanent/long term changes.

So, no, even when pretending that what makes a person trans isn’t started in the womb, it does not boil down to a single choice the way an addictive substance would.

First, not all substances are addictive quickly. None are immediately addictive that I’m aware of. So if transness were a choice, it would still differ in that way.

Second, there is still a difference between making a choice to engage in a long term process and being pressured into a short term action via social manipulation. One can only be peer pressured for so long before a breaking point is reached, though that point may still result in the individual accepting the social pressures and following them.

Thus, it would mean it isn’t a single choice, it’s a chain of choices.

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Now, there’s another aspect to the general idea of transness being a choice rather than a state of being (and, again, that’s just the restriction of the thought experiment, not a fact). It begs the question that if individuals have freedom of choice to do a given harmful thing, why can we not choose all harmful things for ourselves? Why can we consume alcohol, but not steroids? Why do we allow restrictions on some things but not others? I’ll let you guess the answer to that as it goes off on a major tangent.

And, indeed, if being trans were a choice, it should be completely treated the same as deciding to get a tattoo or stop at the pub for a few pints. Mind you, that assumes that body autonomy is something we should all have. Anyone that doesn’t believe that is welcome to their opinion, no matter how shitty it is, but I won’t debate it.

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Now, you deny that predisposition exists. I’m not sure how or why you came to that conclusion, what with the very clear evidence of predisposition to things like breast cancer, Alzheimer’s, Parkinson’s, or any of dozens of diseases known, beyond any reasonable doubt to have a genetic factor that increases the chances of them from marginally to vastly, or even almost certain.

Denying predisposition to other illnesses as even possible is just poor thinking. When there is compelling evidence to the contrary, holding that belief is on par with hating vaccines in terms of sheer thick-headed duncery. Anyone believing that it isn’t possible is quite welcome to that belief, but then again, they’re equally welcome to believe the sun rotates around the earth, which happens to be flat. So, you know…

With that in mind, I suspect you are, indeed, out of this world on this one lol.

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To conclude, transness is still not perfectly understood. Since a great deal of it exists as physical aspects of the brain, and seem to stem from hormonal and epigenetic processes in the womb, I doubt a fully perfect understanding will come along any time soon.

But it is absolutely, positively, 100% not a choice. One might choose to transition for other reasons, as humans are a complex and interesting species. But that’s different from being trans in any real sense.