Recruitment was a method for an organization to gain new members.
Faction Paradox's recruiting from the lesser species scandalized the Homeworld, but also made it seem less of a threat. How much of a problem could they be if they had to stoop so low to expand their faction, it was thought.
After a brief fling with the Cult of Celebrity Death, it was decided that it was better to draw less attention by recruiting those considered unworthy by their society, who were more naturally attracted to the Faction anyway. (PROSE: The Book of the War)