Sexes don't exist, remember. I thought you were above all our primitive notions of identity..
Sexes absolutely exist. There are distinct male and female reproductive functions. Yes, there is a lot of secondary baggage on top of those, but dismissing the baggage doesn't make the fundamental part any less real. The ability to impregnate or become pregnant are not social constructs. They are not an identity. They are physical reality, one which the continuation of the species relies on, as I've said a bunch of times.
The only reason I'm not doing it now is because I refuse to air genuine pain for the sake of your fun.
The reason you aren't talking about your personal experience is because, if I recall correctly, you've lived out exactly what I'm saying. The logical contradiction exists only in a person of one sex thinking they are innately the opposite gender, which is also the only line of thinking that leads to medically transitioning children. Nothing in my viewpoint takes any issue with people who would challenge or dismiss societal gender roles, who would choose to live outside of that binary.
Did you not begin that sort of transition, one to the other within the binary, before stopping that and settling down somewhere outside the two traditional gender roles? If I do remember your situation correctly, your lived experience is in rejecting the social categories you're claiming a person can't reject. My suggestions to someone who isn't comfortable with their gender socially is ultimately to act more like you.
I'd still kind of like a proper answer regarding someone losing their reproductive organs through accident or assault. If they seek to have a surgeon recreate/reattach, your two "premises" are exactly as applicable to that scenario. By your own logic that person is being "contradictory" if they consider themselves a man and also want the surgeon to recreate/reattach a penis.
Ignoring your picture, we're talking about people.
It's only contradictory if they continue to consider themselves a man while believing they need that penis to continue to be a man. They could consider themselves a man, but want a penis back, not because their identity relies on it but because they like having a penis. That's not a contradiction. And I've said a bunch of times: if someone wants to be the opposite sex, that's not a contradiction. If a woman wants to be a man and wants surgically constructed penis, sure, go for it. The contradiction is a person confident in their identity as a man who also thinks that surgery is medically necessary to be a man.