I think Scott has played things out differently to Magneto. His speech (which I can only assume Fraction has put a helluva lot of thought into) alludes to a new purpose for mutants, rather than a new mutant state being established like many seem to believe. Although if comic fans reading the issue have mixed views on what Scott really meant, then you can imagine if it were real that a good deal of the general public would also be uncertain what his statement really meant.
Utopia stands for different things than both Genosha and Asteroid M did. Here, the purpose of the island is to provide a safe haven for the remaining 200 mutants. One that is not amongst any other civilian property or land where it may be a potential threat in terms of wayward powers, or explosive fights instigated by superiority of 'evil mutants' or hatred of mutants by ignorant humans. Scott inviting 200 people to live away from risks to themselves or the public is a way of ensuring to both humans and mutants that no one will be hurt, ever. By stating Xaviers mandate of "protecting a world etc etc", he is almost saying that those residents of Utopia aren't completely separated from the world, but are merely living offshore to make everyone safe, and that because there are now so few of them it becomes even more important to use their powers to help out ANYONE whenever possible rather than merely be a person with powers just living an everyday life.