CFE does not deliver.
It's a clear cut case of using inappropriate tools for the job.
You don't get better at running, swimming, or biking by doing short metcons, or even long metcons.
All of those activities require a certain amount of skill and adaptations.
That bit from the Girivek magazine is gold. Tyler Hass is a damned crybaby though, and regularly reads the "couch" thread on IGx and reports to Crossfit HQ.