An interesting insight I learned from a YouTuber who binged a TV show that toured mansions, most of those enormous houses come with one normal-size room. That room is where the residents spend the majority of their time. Often, it's a kitchen. Sometimes, it's a "small" smoking room or even just an especially cozy corner of an oversized living room.
Definitely recognizes the hoarding difference. When you’re poor, you have a thing, and don’t know if you’ll ever find another one under the cheap circumstances you got it, so you keep it, even without much space.
When you’re rich, you know you can obtain the item you need on demand for money. Or, say, if it’s a tool, you can hire contractors that bring their own.