On the whole "marriage is wonderful" thing... the problem is that many women are aping marriage without the security. It would be different if they were choosing to remain single altogether, but many of them aren't.
Many millennial/upper Gen X women were told that marriage was patriarchal, outdated, just a piece of paper. But when it came down to it, women of those generations still wanted to settle down and have children. Many most women in my social circle were surprised that, after years of cohabiting, their partners didn't seem interested in marriage or children. These women had "contraception failures" around about the time their friends started getting married, and then seemed shocked that their partners didn't get down on one knee.
They didn't seem to grasp that now that it's socially acceptable for couples to live together and have children before marriage, marriage has become much less attractive to men. They thought the men they had sex with after a few dates would suddenly resort to 1950s courtship standards when they snapped their fingers.
Nowadays, cohabiting couples still follow the patriarchal traditions of marriage - children are almost always given their father's surname, the woman does most of the housework, the woman takes a dent in her career for childcare. They're just doing it without the protection of a contract. Paradoxically, these "anti-patriarchal" couples have kept the parts of marriage that benefit men and dropped the ones that benefit women.
I can't blame Gen Z for thinking, "You know what, maybe marriage isn't such a bad idea after all..."