You do that if you feel like it's important.

The claim was very few companies do what Twitter does at that scale, truth is Twitter is not a big fish in that space.

Since you are at it, do GDP of countries where they operate too.

I reckon a $ million in ad revenues in India is harder to come by that the same amount in USA.

How is revenue the only metric for "scale"? It sounds like you really don't know what you're talking about if when comparing technical complexity, your metric to go to is how much money something makes and not how many user accounts need to be served or the geographical complexity of running a real time view consistent across the globe. By that metric, is Walmart or Saudi Aramco's tech stack more complicated and larger scale than a software company's?