I meant in terms of inducing social/economic conditions that enable anti-natalist mentalities or force people to limit reproduction.

When it comes to media, traditional media is obviously unviable but social media can work in the future since third world access to the internet will increase eventually. On the internet, most of us people from non-Anglophone countries have some proficiency in English. As for the most natally problematic region on the planet, Africa, the majority of people there who can access the internet will most likely speak a colonial language like French, if not English.

Even developing countries like Brazil and Bangladesh have sub-replacement fertility rates.