To be fair, the type of runner CJ is, that's what he needs to do, he needs to explore whatever hole is there, there's just not any holes. Fred and Boobie need to just pound it straight forward.
CJ would work with a scheme that opens up lanes, gets him the ball in space (screens, passes, etc), and has good second level blocking.
This is not that scheme, and therefore, he doesn't work. He doesn't belong on this team with the current scheme. Either the scheme needs to change, or we need to use a different running back.