It's fairly obvious that to raise the birthrate, all you have to do is get rid of proper sex education and promote abstinence-only education to teenagers (because it doesn't work), and get rid of social media for them. Prohibit them from buying alcohol but give them plenty of ways to acquire it. Use teenage rebellious nature to socially engineer them getting drunk together. Teenage pregnancy is how to get them.
Of course this is absolutely abhorrent to the left, but the article is discussing the left's lowered birth rates, and giving teenagers, especially women, sex education that works can't be ignored. It's some Handmaiden's Tale shit to dupe teenage women into having kids so they're beholden to a man and their family, so they don't get an opportunity to have their own lives, and are instead merely baby making factories, but this is the future of the human race we're talking about here!
No one would ever admit to this being the plan out loud, but it's pretty obvious if you look at it from a societal standpoint, on the level of Dune or the Foundation series of sci-fi writing. Or Idiocracy.