Look “What would John say? What would Jane say?”. Just sophistry.
Fine, I’ll take the bait. Let’s say Indians and Chinese look at Europe and say they are behind in science and they don’t have the caste system. So what. Does that make Europeans unfit to be part of aoe 2? Does that voids their achievements? Nullifies their impact on history and how they changed the world over centuries? Now tell me, what achievements do the Muisca and Mapuche have in South America. In what way they changed the history of their regions before the Spanish arrived at least.
How about you give us good reasons as to why irrelevant tribes fit as new civs for aoe 2.