What about this is hubris? Wouldnt you argue they have a responsibility to try? Wouldnt it be hubris to build such a powerful platform and not think to care about minimizing the amount of damage malicious actors could do with it?
And Facebook does this without a hint of recognition that such imposition will be (and already is) being used as a political weapon against dissident voices.
That's hubris.
Major corporate policy such as what we are discussing is dictated by them, in that order.
They should work with legislatures and law enforcement in their respective countries of operation to figure out what those countries (and their people) actually want them to do. Some countries have strong hate speech laws; some have strong freedom of speech protections. Ideally, this should be reflected in their communication platforms. One size doesn't fit all.
At that point, they have to decide if operating in a country that demands this sort of thing is morally acceptable or not.