Humans have thousands of languages, the fact that an alien tribe can perfectly understand English itself breaks the immersion, I know it's a porn game but the devs did say they want to build something more than just that, the lore and story are quite straightforward but the fact that they don't have a native language is weird, that's also the only thing that I didn't like in mass effect as almost everyone spoke English, kind of breaks immersion in an rpg. Everyone in this game even the ones that look like backward savages speak in a sultry American accent.