A social construct that is not created by us is irrelevant to me especially when it pertains to who I am.Just because something is a construct doesn't mean that it doesn't refer to something that is concrete.
The Iberomaurusians (ancestors of the Berbers) were more biracial than their modern descendants; and Berbers derive most of their Eurasian ancestry from females, so it's unlikely that their language has its origins with Eurasians.