As a cis woman like you, I think that the people that want to define me because I've born with a vagina always want to limit me to y biology. While you claim it is only "semantical", the fact is that language is used to define things, think and write laws. And here is the thing, the people who want to claim that vaginas = women are the ones who also want to deny our body autonomy. There is a pattern.
And there is also a discourse about how because I have a vagina, I'm not a "real woman" if I don't have children. So it comes with pressure to give birth. And of course with pressure to prioritize childrearing, etc.
So no, I'm not "defacing" how you define yourself. I'm just pointing out the obvious fact that a vagina doesn't make a woman not it is required to be one. And neither does periods. A girl who has a hysterectomy and never has a period in her life, would still become a woman. A boy who is born with a vagina, would become a man even if he doesn't have a hysterectomy or if he gets pregnant. Because that is not what makes a woman a woman.
I don't feel less of a woman because trans woman exist without a vagina. So my question is, why do you feel that my pointing out those obvious situations deny who you are? Because I don't really get it. Our identity is not about that. And if I have to be honest, I think that people who insist it is based on ou biology make things more difficult for cancer survivors who have to endure a mastectomy or a hysterectomy because what you are implying is that they are less woman because of that.
So with all respect, it is not defacing. On the contrary, it is pointing out that we are much more than our body and our biology. .