I truly hope that you never lose a child. However, you can at least understand that "these people" lost their son, and are grieving. A bit of fucking empathy is appropriate.
They allowed their child to degenerate in front of them and it wasn't because of the computer; it was because they didn't do anything for him.
Empathy should be encouraged but in this case the mindset of the parents contributed to their son's suicide, and empathy should be had for the child instead of the parents.
I mean you could be right, but chances are, they did try.
There's a difference between instilling your own moral principles upon someone and actually helping them.
Their only idea for solving the problem, in retrospect, is to remove from his life the only thing he cared about!
You can help someone in more ways than just "raising" them, and in this case the way to have actually helped him would have been to display enough understanding to gain his respect, and then guide him gently into a safer course.
Even in an article that's published in a paper with fact-checkers and standards, his parents still refuse to acknowledge RollerCoaster Tycoon as anything other than a violent video game! It's a game about building a theme park! It is blatantly clear that even the mildest effort to understand him or his activities wasn't taken, and that they refuse to do so even with the benefit of hindsight.
You can stand on a hill and grandstand to your child as much as you want, but if you don't put in the slightest effort to understand them it's your fault when they end up doing something that hurts them.
Have a gander at "23 Of The Most Fucked-Up Things People Have Done On Rollercoaster Tycoon" ( https://www.buzzfeed.com/michellerennex/yall-evil-af ) #10 is particularly "amusing"(?): "I built a huge rollercoaster that would launch the people into my rival's park, increasing their death rate. People didn't want to go to that park because so many people were dying, so they would come over to mine, and go and die in my rival's park." A cornucopia of such postings come up in a casual search.
While I'm not defending the news article (none us can know what really happened) nor do I believe games trigger violent behavior (as an avid gamer, I have ample anecdotal data against it), players can indeed be antisocial (not asocial, antisocial) in games that are not explicitly intended to have violence or other antisocial behavior as part of the gameplay.
You don't get to grieve after your child after you shut your door in front of his nose.
Especially since that rejection was direct cause of his move to Asia where he was found dead.