Re: " if this is a real danger "
I don't suppose it is too hard to modify a battery to overheat causing a fire that threatens a plane.
To the ones who think the government guys are overreacting, you had better hope they protect your next flight.
PS I for one will not miss having someone working away in the seat next to me or watching some drivel on their laptop. Most of the time I can telework so this will reduce the travel I will have to do.