I'm unable to open this without permission, but I'm curious about the extent to which they interrogate the combination of rigid gender roles and wage stagnation.
I'm not mormon, but grew up in an evangelical christian community that held many similar cultural ideals, especially the importance of maintaining a "traditional" nuclear family, where the father is expected to be the primary breadwinner and the mother is expected to play the role of homemaker and often home educator.
I'd speculate that a big factor in its adoption is that it's an income supplemental that allows you to continue childcare or homeschooling.