I wonder why the original requestor isn't tied to the RBAC access, rather than the tool. For example, in a database I know both the account that is logged and

I wonder why the original requestor isn't tied to the RBAC access, rather than the tool. For example, in a database I know both the account that is logged and the OS name of the person using the account. Why would the RBAC not be tied by both? I guess I don't understand why anyone would give access to an agent that has anything but the most limited of access.