The Three Pure World, although a place where everyone practices cultivation, to the commoners at the bottom of society, successfully achieving Core Formation in their lifetime would already be considered a great success.
As for reaching the Nascent Soul, that's the stuff of legends, beyond the wildest dreams of ordinary people.
At most, they might have a child and then relentlessly urge them to practice diligently, in hopes of achieving ambitions and dreams they themselves could not, perhaps even hoping for a stroke of ancestral luck to raise their status through their children.
In other words, for the majority, and I'm being conservative here, at least ninety-five percent of people, their comprehension of the ultimate powerhouse, those beings who could metaphorically defecate on their heads, are limited to the likes of Golden Core and Nascent Soul experts, and they have absolutely no concept of anything higher.