The dude snapped when he’s loved ones were killed, that is considered exculpatory of violent actions in almost all legal systems. The difference is that instead of a knife or a gun he had almost omnipotent powers of destruction.
In an ideal society he would get psychological counseling to deal with the trauma and ensure it doesn’t happen again, but I think it’s obvious he was a bit above Troi’s pay grade.
It sounds like a “there isn’t a single corner that wasn’t cut from design to manufacturing to QA” problem. They should give the management board another bonus.
He also has an omnipotent trickster god that decided to make him a better person as a hobby. There’s no way Q wouldn’t turn Picard’s casino trip into one of his “trials”.
Why are they in contact with the family and not with the reporter directly? It’s not like we are 1823 and communication has to be sent on precious missives traversing dangerous seas.