Question: Why exactly did Magneto lead the Brotherhood and Omegas to San Francisco to destroy the cure facility? Couldn't they have just simply chosen to not take it?
Phaneron
10th Feb 2020
X-Men 3 (2006)
20th Nov 2017
X-Men 3 (2006)
Question: Did Magneto get his powers back because the cure is not permanent, or is he just to powerful to be cured?
Answer: The implication is that the cure was ineffective. Magneto has full control of his powers by the time we see him in the mid-credits scene of "The Wolverine." Rogue, who also received the cure in this film, has her powers back in the extended edition of "X-Men: Days of Future Past," which takes place in the same timeline as this film up until the very end of it.
Answer: The cure is only temporary. The Rogue Cut of X-Men: Days of Future Past makes this explicitly clear as Rogue has also regained her powers after taking the cure.
23rd Jun 2017
Answer: The cure has been weaponized at this point and they don't want it forced on other mutants or themselves.
Phaneron ★