"And who is, in the end, the parent usually taking children to school and picking them up, and dashing over to pick them up if they get sick or injured?"

While this is true, this has done more to hurt women than the RTO policy. I grew up in New Jersey. When I was 5 years old I started Kindergarten. The first day of school my father walked with me, to show me where the school was. After that I was on my own. And all of the 5 year olds in my neighborhood were also on their own. We were expected to have enough maturity to get ourselves to school, and we did, everyday. We generally walked together, all the 5 and 6 and 7 and 8 year olds. School was exactly 1 kilometer from my house.

If you're looking for something that puts an undue burden on modern women, it's the modern practice that children cannot get to school on their own. They (the children) still somehow manage to get to school on their own in rural areas and in most countries: most of Europe, all of Latin America, Africa, nearly all of Asia.

We should be clear about where the real burdens are coming from. If we could get back to a situation where children could get to school on their own, the situation would be easier for women.