If woman means sex, then transwomen are not women.
If woman means some kind of mysterious gender identity, then the vast majority of posters on this board are not women, cis or otherwise.
One of the other of these must be true.
This is it for me. If we're naming by identity rather than sex, then I, like so many others on this board, am agender, gender queer, or perhaps non-binary, depending on how they are being defined at any given time.
Under the Stonewall Umbrella, that makes us trans. If we're trans, then people to stop telling us to shut up because our opinion as 'cis women' doesn't matter, when apparently we're actually part of the very group they're trying to protect.
If we're naming by sex, then men aren't women, and men therefore need to stop telling women that they have no right to name themselves.
Either way, no one has the right to compel us to accept a descriptor or prefix, whether they consider it factual or not, while also insisting that we must respect the choices of other groups to name themselves.