Saying that "people need to get paid higher wages to be able to afford having children" is obviously propaganda in an attempt to motivate rich people to pay poor people more money. I'm not saying that they shouldn't do that; in fact they should; but the fertility rate has nothing to do with it.

There are worldwide studies that families with less money typically have more children, but it's very important to note that this is only correlation, not causation. In other words, giving people more money does probably not (i believe) cause them to have fewer children. Rather, i think it's the other way around: Having more children leads to poverty as children are really expensive.

Also i want to point out that the story is really really more complicated than that. I.e. you see a lot of people wanting to have children, but not doing it because they're afraid that the cost of living will be significantly more expensive in the future. Yes, you read this correctly. It's not about the cost of living today, it's about the cost of living in the future. Consider this: Children (if treated properly) live around 80 years, and during that whole time they should be fed and housed. That costs money. If housing becomes significantly more expensive in 20 years, it will be very difficult to house them. You should think about this today, not in 20 years. The fear of future rising cost of living is a reason why lots of people are deciding against having children today.

Also there are many more things that i want to say about this, such as that there is a very directed campaign on social media today to disincentivise leftist people from flirting with other people today, which effectively leads leftist people to be less in romantic relationships, more lonely, less connected, less organized, also less pregnant. This obviously hinders them from organizing properly, which is a top-down attempt to smash rebellions before they happen. This is a scheme that is highly effective of corrupting society, especially leftist people as conservatives typically don't listen to social media and its messaging, especially when it comes to not flirting with other people (sexual harassment) and such.