Humans Don't need krakoa, they have no necessity or are being wanted on the island, it's not xenophobic when mutants are a in state of preservation and internal growth, its ridiculous to assume they have a responsibility to welcome humanity when the main reason krakoa exists is because humanity DOESN'T welcome them.
America and europe are enourmous continents that have hundreds of years of history of opression and colonialism that have sucked the rest of the world, hence creating an area where less priveledged people from countries that have suffered for europe/america to grow, move into to get a better life.
It also posseses the best infrastructure, education, health care for humans.
KRAKOA ISNT EVEN ON THE 1 MILLION CITIZENS, its TINY, it produces it's own resources, IT'S MADE FOR MUTANTS with their own needs, quirks and atributes, it wasnt stolen or colonized, its major economical affection is their new type of medicine that they even employ huamn scientists to colaborate with, you cannot compare an TINY ISLAND to TWO CONTINENTS, it makes your argument seem petty and unimformed