The English translation is kinda mediocre imo. The word "unpaid" doesn't come in expressly or implied.
The level of time spent on housework by Japanese men is extremely low, even from an international view. First, we'd like them to share in the care work at home.
Thoughtfulness begins at home.
Personally, I see it as a side effect of the workaholic culture, being unable to divide housework fairly when one or both partners are overworked is bad for both.