The villains are important to mention because it shows that even at its worst, Krakoa was still making the world a better place than it was before it existed, and its community helped to turn several criminals into heroes. For all talk about Krakoa's governing body falling to corruption, the island itself helped so many people, and its people were good overall. When accusing the X-Men of being villains, you have to keep that in mind.
As for the X-Men having body counts, can you elaborate on that? Because pretty much all of them have only killed in self-defense, and to stop Orchis from wiping out all organic life in the universe. But maybe I missed something.
Good thing the X-Men weren't going around committing genocide. The whole impetus for Krakoa was that mutants were absolutely, 100% going to get exterminated if they didn't band together. It was to avoid their own genocide. And even when Krakoa was formed, they made human lives a chief concern.As to your other point... and not to go on the extreme here...but Hitler believed that genocide was necessary for the survival of his people too. A HERO(s) knows that the road may be hard and that they may not survive the journey but they still do it anyway. That is what makes them heroes. The fact they get up again and again while NEVER taking the easy way out or becoming what they are fighting against.
I'm not sure what you mean by the hero's journey comment. They didn't really give up on being heroes. Krakoa is not taking the easy way out.