This is all about a convenient suspension of disbelief.
I can’t believe people are mad at him. X-men was always primarily a metaphor for the civil rights movement. The spit between nonviolent political action and separatist militant action. The bigotry and how different characters respond to it. It’s like having a movie about Muhammad Ali and leaving out the whole Muslim part. “No it was really just a movie about a guy fighting Joe Frazier.”