This is not true actually. There was a miss-interpreted study that calculated a lower average in working hours but that was because they didn’t consider that many women work part-time. Which lowered the average working hours.
When you look at households, though, the number of working hours is much higher. And that does have an influence.
I am an older person and I can still remember that my mother organised all social occasions of our family. We had big family gatherings regularly, coffee and cake every Sunday, activities in the local community and at schools, etc. This was all organised by the women who did not have jobs. Who is supposed to do all this today?