Please, google "pregnant women working the fields". Or about women's work in mid ages or any other time in history. Women did physical work while pregnant. They also did work indoors. But acomodations for pregnant women is relatively recent. And even now, you can see pictures of pregnant women working the fields. So that idea that women need to stay indoors is our "modern" idea. But not what actually happened.

As someone who has study philosophy you know what comes next. If your premise is false, si is the reasoning that follows. It could be valid and still false.

And apparently, antrophologist have found several warrior women that were misclassified as men because the same modern asumptions. You can google this too.

Since you are a philosopher, after you google about women working the fields, the finding of women warrior tombs and the work women used to do historically, I let you theoritize why that evidence is ignored in favour of narratives like yours.