Spoc quoted in the movie, That an ALTERNATE Timeline had been created.
If you were a real Star Trek fan:
1. You would have listened, without ignoring half the movie.
2. You would know this is not the first time a Timeline has been created in Star Trek.
The other movies HAVE happened, However, Not in the same Timeline as the new Movie. A New timeline was created the moment Nero came through and attacked Captain George Kirk.
1 Example of an Alternate Timeline:
The Evil Universe, shown in most of the Star Trek series.