I'm all for safety and security, but this would be absolute chaos for the reasons stated in the article.  Nearly every seat on aircraft flying international routes, US carriers and foreign, are wired with USB ports and electrical plug ins.  They cater to both the business and leisure traveler who has a laptop, tablet, DVD player or some other non phone electronic device.  Also a lot of travelers are carry on only who don't check bags in order to make tight international connections and speed through customs and immigration.  Forcing passengers to check their luggage with laptops, tablets etc., will add to the already time consuming, stressful airport experience.  How about a compromise......remove your laptop battery and check it and use the in seat power access to use you computer?  Problem solved right?  No battery in cabin but passenger can still use laptop.  Wait, that solution is too easy.  It'll never work.