You know what, @Cauliflowery, maybe that is the approach we should be adopting now, when people say trans women are women and we should be more kind.
Because nobody actually believes that this is true. The whole concept of "preferred pronouns" demonstrates this perfectly. We can see with our own eyes what sex you are, so the only reason for needing to tell someone what your pronouns are is if you are asking them to pretend that you are something other than what you quite clearly are, or if you wish to demonstrate that you are an "ally" who is happy to go along with this pretence. If any of us believed that trans women are women, we would naturally refer to them as "she/her" without needing to be asked to.
So @GnomeDePlume, if you're really fed up with the gaslighting and want to be a bit more ballsy about it, you could also try this sort of approach:
"You don't believe trans women are women. Nobody believes this. If they were women, you would be just as open to having sex with one as you are to having sex with a woman. If they were women, there would be no controversy about whether they should be allowed to use women's single sex spaces or compete in women's sports, because we would all be able to see that there is no difference between trans women and women. The question literally only arises because we all know perfectly well that they are not women, but we are being told - not asked - to pretend that they are.
So my question is this. Why are you pretending? What is your motivation?
Is it because you have internalised this idea that it is kind and progressive to do so? Because in that case, you need to ask yourself why, in order to be kind to trans women, we have to be unkind to women. Women have been raped in prison because of this. Women have been denied the single sex rape crisis support that they need because of this. Female rape survivors and Muslim and Jewish women can no longer use women's changing rooms because of this. Female athletes have been beaten by male athletes in their own sporting categories because of this.
Or is it because you feel uncomfortable defining people who wear dresses and makeup as men? Is it that you don't want them in men's spaces, and feel more comfortable with them being elsewhere, even if that means they end up in women's spaces? Because if that's the case, I think you need to examine your own feelings about gender stereotypes and even whether there is some internalised homophobia at play here. Do you feel uncomfortable with the presence of a male bodied person in a dress in men's spaces? And if you do, for whatever reason, why are you calling me a bigot for feeling uncomfortable with the presence of a male bodied person in a dress in women's spaces? Can you really not see the hypocrisy here?
Ultimately, whether you are pretending that trans women are women because you believe that it is kind to them to do so, or because you do not feel comfortable with them in men's spaces and wish to pretend that they are not men, you are prioritising the feelings of people born with penises over the rights and needs of the female sex. Over me, your wife/mother who birthed you/your children. Over your grandmother/mother. Over your sister. Over your daughter. Over your female friends. Over vulnerable women who have been raped. This is not kind and it is not progressive, and frankly I am very disappointed in you for peddling this misogynistic BULLSHIT."