How many rounds of ammo he had is not really relevant (unless he used all 26000 rounds of ammo or was in the process of using them).

That he killed the wife in front of the kid… that is relevant.

"First things first, I just want to say the fact that the murderer had 47 guns and 26,000 rounds of ammunition sheds no light on his personality or the crime."

Okay.

If he regularly shot pictures of women or something sure but owning a lot of guns or buying ammo in bulk isn't really any indication of domestic violence. The son even said there wasn't a history of violence. It seems like the heavy drinking or arguments have more correlation than anything.

Media outlets often cite things like how many guns someone has to freak out people who don't know about guns. All the dude needed to fuck up was a single handgun and a single bullet. If he was drunk he shouldn't have even been carrying. And being drunk isn't really a good argument for why someone got violent.

owning a lot of guns or buying ammo in bulk isn’t really any indication of domestic violence

Good thing there isn’t a known correlation between gun ownership and higher rates of domestic homicide, right? That would totally destroy your argument. How embarrassing that would be.