General agents flatten every job into the same interface and the same context window. That makes them flexible, but it also makes them noisy. Research contaminates email. Email contaminates analysis. The user inherits the cleanup cost.
Rush splits work into installable agents with their own prompts, tools, permissions, and interfaces. They can delegate when a task requires specialists, but they do not need to carry every workflow in one monolithic frame of mind.
This container model is what makes an agent store coherent. People can choose the capability they need, not subscribe to a vague universal helper and hope it behaves.