I will say that I think you're projecting quite a bit of malicious intent behind the scene that's just not there. It was a storytelling device to convey that they were in the Tower of Babel. There are plenty of comics that have had untranslated dialogue in it (specifically, Tom Strong comes to mind). I'll concede that putting the translation in the back would have been a good idea. But there was never any intention to deliberately piss people off.