Thrall just isn't half orge. Look at the half ogres in the game and there is abolutely no resemblance. Almost every major NPC in the game is 50% taller than players, including Jaina and Sylvannas. His backstory is set in stone, it's verified and witnessed by too many characters to be fake. To dispute it is akin to being a holocaust denier or a
birther.( The claim is ludicrous.