If a hacker had done this, we would be trying to put them in prison forever. If this were a company making a physical device that happened to kill people, the settlement numbers would be astronomical.
I predict that *at best,* there will be some kind of "hearing" along the lines of the Boeing inquisition, but I doubt even that will happen.
Which makes me wonder (among other things) why we have allowed software bugs and errors to occupy their own special moral category.