Meta are dominant in their sector across the globe. Of course they follow American standards, but their dominance insures the rest of the world goes by American standards.

Indeed there's no laws in the US that protect violent images whole covering the body, but that is the cultural standard which has been exported around the world.

I get that you're making a point that, why give control abroad to governments when I'm the US companies self censor?

First, what goes into the hands of companies versus the state also various culturally, and the US does have content laws other than the one you highlighted.