[afterhoursarmory]

RedHat expects YOU, the administrator, to secure the server.
They don’t know your org or needs.

[TexasGunLover]

RedHat expects YOU, the administrator

You apparently don't understand how an OS works. You may also not know there are critical flaws that allow execution of code bypassing policies.

NOTHING is 100% secure, but the fact remains that linux is inherently insecure and has many security flaws you can not secure.