What is one of the primary claimed benefits of Smack over SELinux?

SELinux implements Type Enforcement, a form of Rule Set Based Access Control, so the statement that it doesn't support this model is incorrect.

SELinux is open-source software developed by the NSA and is widely used without export restrictions; this claim is factually inaccurate.

Smack (Simplified Mandatory Access Control Kernel) was explicitly designed for simplicity, offering a much easier-to-understand and configure policy language compared to the complex and granular policy development often required for SELinux.

Smack, as a Mandatory Access Control system, aims to enhance security by restricting access, not to allow users to bypass administrator intervention for file sharing, which would typically be a security risk.