4) He was a super awesome Ranger, and if he wasnt "close" to elves, he would have never made it into being as successful as he was. He didnt need to be in a love relationship with an elf, or adopted, or anything; but he became what he was, both because of his skill in achievement and because the elves took him under their wing. He was a prime example of the ability to be trained by a different race in their ways. Something that is not foreign to WoW to this day ( Monks ). As people have mentioned, its completely possible for exceptional people or groups to form connections that is not typical of their faction/race. These individuals and groups can also eventually teach their ways to further individuals or generations. As mentioned above in 2) , population numbers do not dictate the ability to do something.