The fictions are decaying because the constraints that created them are gone. This is not a crisis. It is not the end of meaning or value or human contribution. It is the end of a particular set of social technologies that were brilliant adaptations to a world of scarcity.
That world is over.
The new world, where energy is abundant, biology is programmable, and intelligence is a commodity, is not a utopia. It will have its own problems, its own constraints, its own fictions. We will have to build new social technologies for new challenges.