>>122617245That's a misunderstanding of what was happening. Pre IvX the status quo was that the Inhumans were moving anyone, human or mutant, who didn't want to be exposed to Terrigen out of the path of the cloud. No mutant was in danger from it unless they were too stubborn or stupid to take the help being offered to protect them from it.
Then in IvX, Beast learns the cloud is dispersing, spreading through Earth's entire atmosphere, and nowhere will be safe from it. The X-Men, under Emma's leadership, keep this intel from the Inhumans, and start a race war with them instead. Medusa doesn't learn the cloud is dispersing until the end of the story.
