"Back to the topic of AoCs.

The historic relationship between the AoC and the ability of countries to feed booming populations is that the AoC doesn't arrive beforehand to create a more sustainable population; rather it arrives after the problems are largely solved."

Societies have historically had various options to ration involuntary celibacy.
In some societies, teen girls marry men in 30s and 40s who have finally earned a bridewealth - and after popping out some babies, tend to reach their 30s either as widows with children who are poor marriage prospects and therefore involuntarily celibate, or caring for a 50+, ailing and subfertile husband, thus limiting their lifetime number of babies.
In other societies, poor girls spend their teens and twenties as involuntarily celibate maids earning to collect their dowry, so that when she finally can afford to marry in her 30s, she has limited time for her lifetime children before menopause in her 40s.

Which of these is preferred is a matter of social preference, and in some societies both options coexist so which of them applies is a matter of opportunity and some space for individual preference.

AoC effectively operates to ban the first option.

"Policing teenage pregnancy is a luxury that only the elites and the wealthy can afford."

Um, the elites and wealthy could afford supporting teenage pregnancy if they chose to do so.