The solution described in this article was based on an application initially implemented on 2005 where there were no built in CDC components. The underlying database server was subsequently upgraded to 2008. Since this solution was build using only the standard components, it continued to work with the 2005 backward compatibility pack without any downtime.

You are absolutely right about the CDC features in 2008, however this solution ensured that the application continued to worked pre and post 2008 upgrade without interruption.