The label "man" is.
No, they can deny it if the label doesn't fit.
True. Which is why this social construct is subjective.
A fact you have yet to meaningfully explain or define.
So far, your argument boils down to "men are men, and that is a fact".
I mean, I agree. But you haven't actually meaningfully defined what IS a man, except that it cannot possibly be a TRANS man.
I disagree, and have given a very simple and consistent argument and definition as to why. You can't keep your arguments straight, and you have yet to provide a definition. You're just talking in circles.
You literally have no idea what men or women are.