By building a neat box with few buttons on the outside and still the same or more complexity on the inside. If something goes wrong, you still have to deal with all the inside parts. The only hope is that the few outside buttons only trigger happy paths without complications. "At scale" this seems unlikely, simplifications usually only work in smaller, simpler use cases.

Nomad very definitely does not beget the same gordion knot of complexity of Kubernetes, while working at substantially larger cluster sizes than Kubernernetes is capable of.