OP was explicitly sexist throughout their comment starting with:
The 40hrs are for father supporting the mother not for both to do 40hrs.
I think their presentation was a deliberate choice in order to make a traditional, conservative family structure appealing to the left. I’ve seen this talking point come up a few times recently and I’m not going to just ignore tbe sexism. Working from home, shorter work weeks and more of the profits going to workers are ways to tackle people being overworked. Sending women home to work for their husbands is not the solution.