It maybe a waste of time, but look at how far something like the Amber alert has come. I and everyone around me just got an alert last week I think. It’s pretty hard for a child kidnapper to get away when everyone is looking for a type of car with a certain license plate…
In this case, he emailed and posted right before his act and the mom called the ex-husband immediately.
Maybe something could be done to notify authorities to keep an eye out if someone is deemed a high enough risk by parents, etc…or if something like this is done. You already have folks monitoring terrorist and social networks, a lot of these kids also already scream for attention posting messages/videos frequently.
Clearly, this guy being treated since age 8, off his meds now, has purchased guns in the past month or whenever, etc….should fire off an alert to at least warn an area, etc…after he posts something or calls his parents, etc…
They can keep tweaking it, but it’s a start to try something.