I read the comment as a set of examples to make a point. Sounds like you read it as a laundry list of facts that should each have cited sources.

Both could be true, but OPs point is clear and valid even without sourcing a (perhaps hyperbolic) statement.

They're referencing a pretty publicized spat between some folks at the UN and Elon Musk promising he would donate that amount of money towards solving world hunger. It was meant as an example of pricing at this scale. https://factually.co/fact-checks/business/elon-musk-6-billio...

Where did you get that understanding?? People are starving all over the world, even in places that generally have access to food markets. Food insecurity exists outside of famine, sanctions, etc.