Really? Not only are Chaldeans not Arabs (they are Eastern Assyrian/Syriac people; the indigenous people of Iraq), but I am nearly 100% certain even though I missed watching the streaming event that what you heard was
ululation, which is a common way of expressing joy in the Middle East and certain parts of Africa, and as such is not an “Arab war cry” You’ve already admitted that it is outside of your cultural comfort zone and shocks your Byzantine sensibilities, so, knowing that, why not show some respect and quit equating
fellow Christians expressing joy with the violence and war of the dominant cultural group of the region who are actually oppressing and murdering these very same people?