It's a profoundly dis-empowering and anti-democratic message, which is of course why a lot of those rich people are happy for you to believe it.
The reality is this: in every instance we know of, making education and birth control available to women (not forcing, just giving them the option) has resulted in declining birth rates and increasing standards of living.
It's really quite inconvenient to be pregnant, to parent a newborn, and to be responsible for a child for 2+ decades. It's very rewarding, but it's also really hard. You don't need a global conspiracy to explain why many women limit or opt against it if given the chance.
I can see in my extended family and friends the monetary and general success of those with supportive families (especially those families with multiple brothers) that worked together versus those families that were split apart and did not have someone to rely on. They are in completely different socioeconomic classes now.
Funding cheap ubiquitous birth control on a global scale.
The groups that are still growing are those that oppress women. Islamic countries [1] and ultra-orthodox Jews, especially. Evangelical Christians used to be higher but have now dropped down to the below-replacement US rate.
Teen pregnancies are way down in the US. So are abortions; that's not it.
Nobody really understands why. There's lots of speculation. The decline of religion? Better birth control? Video games? Declining testosterone levels? Fewer people in agriculture?
[1] Fertility rate 2.9. https://en.wikipedia.org/wiki/Muslim_population_growth
[2] Fertility rate 6.2. https://geopoliticalfutures.com/israeli-population-increase-...
[3] https://www.patheos.com/blogs/anxiousbench/2018/06/faith-fer...
"go read this book which explains my point because I can't explain it well enough to others." is not a convincing argument in the least.
The claim that the wealthy are controlling everyone's fertility is as short-sighted as it is parochial.
Given that elsewhere in this thread you explain how this is all the work of a shadow government, the label hardly seems unwarranted.
There is no cabal of They. The "shadow government" thesis is straight-up conspiracy batshit.
Unless you mean the Standing Committee of the National People's Congress of the People's Republic of China who certainly authorized the two-child law just a few years back, but they're not really a shadow government. They're a regular one, just not very transparent.
Ultimately both Chinese communism (via Hegel) and Western feminism (via Wollstonecraft) trace their origins back to the French Revolution, so maybe you are being controlled by Robespierre.