Some agencies are more safety-conscious than others. If the FCC cared about your safety, they would ban using cell phones while driving, since that is much more dangerous, to you and your fellow travelers, than using them on an airplane.
The claim that the gov't wouldn't allow something if it was a risk to you doesn't withstand scrutiny. For example, the NHTSA (note the "S" stands for "safety") heavily promotes to consumers the use of fuel-efficient cars in several ways. That directly translates into lighter and smaller cars, and that directly translates into thousands of additional traffic deaths every year on US highways. And they are well aware of this. Your safety, your very life, is not always their highest priority.
The problem for the FAA is that 40,000 people can die on the roads every year, due to FCC and NHTSA actions, and the public doesn't pay much attention. If 40,000 people died one year in airline crashes, it would destroy the airline industry, and that would not be in the FAA's best interest. The crashes are too spectacular, the media would love all the great video for the news, and many people would stop flying, or at least cut back - very bad for business.
Oh, yeah, and the "non-transmitting devices" quote at the end - the genius expert author of the article doesn't know that iPods have WiFi. :rolleyes