Your response is very helpful, but not for the reasons you think.
Laws are essentially a benchmark, set by society, which define acceptable standards of conduct and behaviour. As that society changes, laws will change.
In this particular case, the laws used to support the prosecution are based on the premise that conduct can be so reckless as to lead to culpability. This is not an American concept, but rather one which is agreed thoughout the West. The UK, France, Germany, and Denmark (amongst others) all have adopted the same approach.