yes, as so many of these batteries have been modified to be weapons with such disasterous effect on board planes, this is now a necessary measure.
furthermore:
*enough training can endow passengers with martial arts skills that can be used to deadly effect, passengers must be tied down
*laptops and other heavy objects can be used to bludgeon, no carry-ons allowed
*the in-flight meal plastic eating utensils can be deadly when applied correctly, eat with your hands
*a wild passenger could open the emergency door in-flight with disasterous effect, it should be locked
*a blanket and bottle of water can be used to waterboard other passengers in the privy, no more toilets, beverages, or articles made of cloth
*psychology may be applied to coerce a flight attendant into unknowingly aiding a terrorist plot, flight attendants must also hold a degree in psychology OR allow no one on board with an IQ over 50 OR gag all passengers
there are *so many* ways to fuck things up, the only way for TSA to secure flying is to expand the no-fly list to include absolutely everyone