While CNN should have done more thorough research and as a result provided a more balanced story, the blame shouldn't really be focused on them. They are just reporting on the preliminary results of a very flawed study, and the results of the FDA's limited, biased, and therefore also flawed tests.
The study tested people who have never used ecigs, gave them substandard hardware in an unknown state of readiness, and measured their nicotine levels after 10 puffs of 16mg. Everybody here knows there's a learning curve to using an ecig. We all know that there is crappy hardware out there. We all know that even with good hardware, you need to have it setup correctly (proper wicking material well-filled with liquid in good contact with the bridge). With all those variables, and with test subjects who are probably there just to get paid and can't wait to get out of there so they can just light up their cigarettes, WHAT DO YOU EXPECT?!? You have to WANT to quit smoking and have to WANT to try ecigs while putting forth the effort to give them a real shot at working for you. Without any of those things, the results aren't surprising at all.
P.S. I would just love to see some video of the test subjects attempts at vaping. Also, would love to inspect the hardware that they were given. With those two things, I'll bet it wouldn't be surprising at all that they didn't get any nicotine. Maybe the study should have hired some vaping consultants to source the hardware and set it up to be functional - that is, if they actually wanted honest and realistic results...