Bro, I think you might be taking the scene too seriously. If you really want to scrutinze such references, youll do better reading the books. In TV, they will take certain liberties to make it easier for the audience. This scene could be such an example where the speech in English is easier to understand than one in a foreign language forcing you to read subtitles.
/u/MrBallistik , 2018-11-23 04:41:53
Content from https://www.reddit.com/r/gameofthrones/comments/9zl5jo/spoilers_danny_s1e10_speech_to_dothraki_in_english/