I think that turning a problem with Marvel storytelling to something that makes other heroes look bad is wrong. It makes no sense for the FF to be complicit with their connections to mutants. Especially when the real reason is that the writers just didn't want to use them in the story and Marvel have treated them like the red-headed step child for years. It got especially worse with the film situation as Marvel didn't want the FF and X-Men interacting because it would give Fox more stories to work with if they ever wanted to crossover the properties.
There are plenty of examples of other teams being in trouble or earth in jeopardy with no other hero in sight, and those are never put on the heroes. Why is it the case with this?
Keep your snide comments to yourself. Okay?