Generic bothrioc quadommes during Ara Kei's diplomacy quest said:
"I must say, farlander, your case was put far more eloquently than I was expecting," it says at last. "A function of your translation machine, perhaps?"
Even without translator microsurgeons, English is still a common language in the UGC due to humans being one of the oldest and most widespread races in it; Syri is familiar enough with the language to hate it, while Ambassador Lyralla learns it to communicate with aliens better. I assume the same "old and widespread" logic applies to Ausari, and that most Confederate citizens would speak at least one of the two.
That's got me thinking about something else: because the korgonne language isn't fully understood at first, its translation software is imperfect, so Steele hears them speaking with improper grammar. Does that also apply in reverse i.e. do the korgonne (except Urbolg) hear Steele speaking with improper grammar?