The majority of the time the family will try to defend one of their own. But it just wasn’t just the family who described this guy as a possible time bomb.
“”Alissa was convicted in 2018 of assaulting a fellow high school student, according to police documents. A former classmate told the AP he was kicked off the wrestling team after yelling he would kill everyone following a loss in a practice match.” https://abcnews.go.com/US/wireStory/colorado-shooting-suspect-make-1st-court-appearance-76670054
He was also telling others people were hacking his phone, watching him, and he’d been arrested for assault among other things.
Okay, that sounds like serious issues to me.
So you are definitely right.
If someone like that was ‘playing’ with a gun in the house I would be looking for a way to separate the loon and his gun.