I sat thinking to myself... That's interesting because the architect shoots down my ideas too (different workplace, so I don't _know_ her situation) but it's certainly not because I'm female, because I'm not female, but it's probably because I'm an intermediate level Dev with lots to learn and the idea has some flaws in it that he can see that I can't.
One of the really good things for me about hanging on HN is hearing "X happens to me too as a man because (reasons) and has nothing to do with gender." That's been enormously helpful to me in trying to find a path forward in my own life.
I hope you get constructive engagement of your points. I don't like the characterization that it's sexism on both sides but that's not intended to be a big attack or something. I think we don't have good language for talking about these issues that acknowledge in a non-blamey fashion that "Gender is, in fact, a factor in outcomes and it's complicated."
So far, we mostly do a sucky job of trying to discuss this at all. It ends up being people on both sides pointing fingers and even if you are bending over backwards to not point fingers, it will get interpreted as such by a lot of people and that tends to go bad places, not good.