I believe that the risks are a bit exaggerated. Yes, the laser beam is quite bright, even at long distances, but at a kilometer, the spot is about a meter in diameter for a laser with a cheap lens. At 1 mW power, that is about 100 nanowatt entering the eye, an amount similar to looking at the laser spot on a white surface from half a meter distance. Hardly something that will blind you, even at night.
Moreover, keeping the spot steady on a target, moving or not, is impossible with a hand-held laser. That will reduce the time-averaged power by another factor 20 or so.
I have pointed class-2 laser pointers at my own eyes plenty of times, half a second at a time. Both green and red lasers. It's really no big deal. Class 2 is, by definition, not harmful for exposures less than 0.25 seconds.
That said, I can understand that they don't want people to point lasers at planes. It's a matter of time before someone does it with a tripod-mounted class 3a laser (or even a 500 mW class 3b laser as was featured on /. a few months ago), in green or blue color (more blinding effect for a dark-adapted eye), which is definitely dangerous. This way, they raise public awareness that intentionally trying to hinder aircraft pilots, succesful or not, is unacceptable.