Your right it should be longer. However the problem is what do you charge them with.
I know a lot of post say attempted murder but you have to prove that was their intention, which I am sure a lot of them did not have the common sense to realize how dangerous it is and just thought it would be fun.
I am guessing the most you could bump the charges up to is reckless endangerment, unless something awful happens and it does cause the aircraft to go down then I guess you could do them for Manslaughter.
It’s a prime example of when technology and its availability surpasses the current laws, however due to increased amount of reported cases and the possibility of ending many lives, especially if it went down over an area like London, I am sure it could be amended and legislation put in quickly after all who would object to it, there is no interest groups on the negative side.
I also do not understand how these lasers can be purchased legally, what purpose do they serve?