Thankfully modern science has invented and improved the breast pump and the bottle warmer and after recovery, women don't actually need to stay home for kids to get breast milk. So there's really no need to be gender specific about which parent should stay home, past reasonable maternity/paternity leave periods.
On the other hand, being single income is a luxury that not everyone can afford anyway. Our living costs have skyrocketed since 2020 and both parents working is necessity for lower and middle income families, in many cases. Even if the second income covers little more than child care, that "little more" is meaningful to people.
If we want better families, we should provide ways for lowering the burden and not force women (her it's women because nothing grows in or comes out of men) to have kids they can't care for and/or don't want and find ways to make childcare more affordable.