Metaphor is part of the X-men mythos but if x-men=metaphor then how the hell does Mojo fit into that? Besides it's never been a 1 to 1 correspondence. X-men represents real life minorities as much as Spider-man represent the average Joe on the street. Not every teenager/young adult have the looks, smarts, charm and sense of humor of Peter Parker. At the end of the day these are stories with people in colorful costumes punching bad guys. That doesn't mean they can't tell meaningful stories with parallels to real life. But it means it's probably best not to think of them as a literal mirror to real life and that's usually on readers not the books. Or in rare cases you get Kitty with her n-word moments which are on Claremont.