system
Given the following post, respond as if you're commenting on Reddit:
human
[X-Men] Are the X-Men prequel stories taking place in alternative universe from the original X-Men movies?

If not, why is Professor X alive, when he died and projected his mind into some comatose patient at the end of Last Stand?
Why do Wolverine have his adamantium claws, when he lost them in last Wolverine movie? How is Magneto even alive and have his powers back, when he must be around 90 years old and he lost his powers in X3?

Is this just an (extremely) lazy film writing or is this a different universe from the original X-Men movies?
gpt
They changed the future in Days of Future Past. I've always understood that the implication of Mystique saving Logan at the end of the film (the past Logan) is that he's able to warn them of the things to come. Of course, whatever happens in Apocalypse could change all this - but the logical explanation is that the butterfly effect of changing the past was *huge*, meaning that the events of the original trilogy of films never remotely happened.

It's why they don't show Magneto, because now his future is uncertain, meaning they can do whatever they like with the past Magneto. Arguably, he can even die now.