Stats in countries where wealth distribution is less of an issue prove otherwise, the only way you're making people have more babies is by getting rid of women rights, I don't feel like pulling up all the numbers again but it's the second time I'm having to correct the "if people had more money they would have more kids" theory on Lemmy.
The second the pill becomes legal birthrate drops, the second abortion becomes legal birthrate drops, the second women start working birthrate drops. So do you want these things to become illegal again?
Finland was under population renewal rate in the early 1900s. At the moment in rich countries the people who have the most kids are those with the lowest income because it means they don't have access to preventive means, they would stop having kids if they could afford it. Developing countries see their birthrate go down the richer they get as well.
I'll share that one because it's easy to find: