Earlier quoted context omitted.
Perhaps a naive take but money, resources and even legislative friction are non issues to try to solve such a disturbing humanity-level problem on a global scale. Which platform or entity wouldn't want to invest or otherwise back it up? Meta alone should shower such initiative with money and proccessing capacity. So then OP could just integrate simple API into their new social network.
... So wait, you're suggesting that they simply use a non-existent Facebook product which Facebook will, for reasons unclear, provide to their competitors for free?
Meta does offer LLama, don't know their reasons, for free, and i only mention them as a largest platform. This not-yet-existent product should be whatever FAANG and governments effort which will save everybody a ton of money.
Edit: some other reasons i mention Meta
https://news.ycombinator.com/item?id=43293004