I don't think feminism comes from there being different emotional responses in men and women, but from the need for equal treatment of women, rather than oppression with its root cause in biological differences.
I think you could learn a lot more about the basic of biology, and how hormones work, what they do, etc. They can't play a different role in one person that is more typical of the opposite sex, because the (sex) hormones relate to your biology, so unless you have the wrong biology (as in disorders of sex development), that can't happen.
Rather, someone might feel like they want to do things that have been considered typical of the other sex, and might feel this very strongly; combine that with a predisposition to a body dysmorphia, and you could easily have the conditions needed for them to think they are trans. Hormonal responses shape our brains in part, along with interactions with environment, and both of those could result in the brains of someone trans appearing to be different than those of someone of their same natal sex, but that doesn't mean that it is something inborn.
Instead, it is more likely to be caused by the rigid gender roles in society, and if those were more fluid, then people might be able to accept that they could present however they liked, without the need to call themselves the other sex, or go through life changing surgery to be accepted.
Physical sex is not a spectrum. There are two biological sexes, and few things that can go wrong in the development of certain individuals. It's totally different from something being a spectrum, with normal distribution between two extremes.