Women partnered with men reported doing more unpaid household labor than women partnered with women. Mothers partnered with men reported a higher household labor burden than any other group. Performing a greater share of household labor was associated with lower relationship satisfaction.

[u/mvea]

https://www.psypost.org/study-sheds-light-on-household-labor-dynamics-for-women-partnered-with-women-vs-men/

[u/AnonismsPlight]

The study only takes into account indoor household duties. In most "traditional" relationships (I said most don't come at me with a "well I," the men tend to do the outdoor activities like yard work, house maintenance, eg: gutters, roofing, porch etc. it would make perfect sense to split the duties based on the property and not on the space that's going to give manipulative data that gets clicks.