Perhaps, if we say they were created in the feywild by one of the creator races, as a magical experiment that didn't go right, then all the lore is true and none if it contradicts ^.^
(Though it's worth remembering that where source book lore contradicts, practice is to give priority to the most recent source book, and where source books contradict novels and story books, it is the source books that have priority. Where video game lore and novel lore contradict, priority is usually given to the novels.)
Fine. Or maybe we can ask Wotc and other DnD creators to make up their god damn mind :P
