They would be if Humanity as a whole was stuck forever into Stone Age level of development.
But as is, Humanity is a species made of inherently curious and avid to survive individuals. Sapiens have made discovery and scientific advancement a cornerstone of their civilization since the dawn of time...
All that to ensure their survival in every environment they were faced with.
Hickman set things up so that the natural order of things for Humanity is to reach a point where progress is so advanced and groundbreaking, it will usher them to transcend their biological condition. Novissimas being the culmination of that...
Realistically, mutants will never be able to stop the ball of progress from rolling, They were never meant to, when every scientific discovery led them closer to becoming obsolete.
They can either join sapiens on this tentative path or try to annihilate them before they walk it..