Why is the blog post on LinuxToday called „How to disable SELinux on CentOS“ longer than „Don’t!“? Why is there no follow-up with an introduction to SELinux?

Niels Kobschätzki
@nielsk
Why is the blog post on LinuxToday called „How to disable SELinux on CentOS“ longer than „Don’t!“? Why is there no follow-up with an introduction to SELinux?