I'm not anti-gun by a long shot (no pun intended), but pictures I have seen of some of these "collections" are staggering (like, enough guns and ammo to arm a small platoon of people).
In many cases they aren't displayed as a collection, but closer to a weapons cache in waiting...for what kind of situation I don't know.
https://www.cnn.com/videos/world/2019/04/30/violent-uprising...
I can count on one hand the number of people I know who own a home but don't own a firearm.
I grew up in an affluent suburb of Massachusetts, where guns were really uncommon.
I got stationed in Yuma, Arizona, where pretty much everyone owned guns.
Here in a suburb of Portland, OR, it's somewhere in the middle. Oregon is an interesting state.