I can kind of see it if the 'one person stays home to care for a child' part is fixed, and then the choice becomes one of 'man stays home' vs 'woman stays home'

I can kind of see it if the 'one person stays home to care for a child' part is fixed, and then the choice becomes one of 'man stays home' vs 'woman stays home'. If millennial men choose the second over the first consistently, you could easily draw that conclusion. Similarly, it's stated early on that millennials were expected to see greater parity between the sexes in most roles, especially professional ones. If that's not happening, and if people are swinging back towards preferring men in the position of 'earner' (and therefore in a position of power), it's not hard to make that connection. It's definitely true that they should have been more explicit about it, rather than seeming to conflate the two without identifying one as a proxy for the other, maybe.