There aren't many more contentious issues in lore interpretation and the lack of any real consistency form SE is horrible. By even saying that it's dubiously canon the Tumblr community lights the flames of war. Acting as though there is not a separate language is a good way to be ostracized regardless of canon. This is not an issue you want to wade into, in my opinion. The RP community has by and large decided that whatever canon shakes out being, Doman will be treated as the language of Othard and so that's where I recommend going.
