User blog comment:Greglarocca095/X-Men in Marvel Cinematic Universe/@comment-34080124-20180503174901

Tom Hardy as Wolverine! Check out the fanart... then talk.

And Emma Stone as Marvel Girl!

And Ed Norton as Beast!

And more!

But anyways, my theory is that when mutant prejudice got to breaking point (mostly in counties outside of the U.S.), he erased them from everybody's minds. Then they hid out on Genosha, hidden and stuff, while Magneto plots revenge, kicking off his story arc.