Big part of the problem is that both men and women hold unrealistic standards for a partner.
Beyond what you've said, I'd say a lot of people just don't see the benefit of being in a long term stable relationship. They genuinely think settling down is some kind of burden, and they're better off alone doing whatever they want, especially because they don't have kids.
I see people all the time in relationships that fizzle because they just don't want to put in the effort to fix it, or even adequately maintain it, and let it fall apart. If it takes talking to their partner clearly about what the issue is and working together to fix it? Not interested.
Being married means always trying to be the best person you can be so you and your partner are always growing together and proud of how far you've come? Too much pressure I'd rather just rot.
Not to mention the rampant mental health issues, including genuine problems from general poor health, problems from being numbed out and apathetic from being over-medicated (SSRIs etc), or issues from the idea that talking about your problems with a stranger will fix them and that nothing is actually your fault (therapy co-dependency).
I find it all quite depressing because marriage and kids is a path that can be incredibly fulfilling and a relief from a sometimes harsh clown world, one of the best consistent sources of fulfillment and pride and swathes of people are lobbing it off as worthless drudgery.
The "I hate my wife" boomer memes probably also don't help.
Edit: The demographics question isn't a cheap gotcha, it's a question of second order effects. If you topple the current government who is most likely to fill the vacuum, what is their demographic, how will they change the rest of the country? Tucker brings this up in relation to the killing and persecution of Christians after regime change due to who took over and the demographics and relationships between the people in the country afterwards.
