[Santiago]

While that may be true at the moment that english is not the majority language of the world. Research shows that nearly 380 million people speak english as their native language. But if you add in all the non-native speakers,it is probably the most common language spoken worldwide depending if you count the chinese languages as actual languages or dialects. It is the language of communication between people and businesses. The number of non-native to native speakers is around 3-1 by some estimates. Just go to any country that is not native english speaking and you will see a plethora of "learn english schools" and some countries actively teach english in their own school system.

I would submit that the english name of Moon is not irrelevant and is more in use than any other name.