User blog comment:TimeShade/The Crisis Has Arrived/@comment-44403021-20191207140956/@comment-26537965-20191207152501

Your point? Ray does not just say he is from their Earth, he specifically says he is from Earth-1. Not to mention Harry says that Earth-X is not given an official designation, because of how much of a horrible place it is, meaning Earth-1, Earth-2 etc. are official names.