I don’t know, I think items being neatly arranged and accessible, a hobby that’s clearly giving joy in curating it, is very different from hoarding behaviour to be concerned about. Maybe we’re using different definitions here, but I used to know someone who hoarded and it wasn’t a nicely organised (but huge!) collection of media, it was meaningless stuff- piles of old papers, bags of stuff and broken clutter. Sure, they had hobbies, but it wasnt a collection, just boxes of stuff they could barely access amidst the rest of it. Cupboards full of out-of-date food, entire rooms inaccessible as the hoard takes over. They couldn’t let anything go to the point their home was dangerous for even them, and it required professional help and a lot of care and time for them to even begin to confront it.
That’s what I think of when I think ‘hoarder vs collector’. Having a whole room full of carefully restored arcade cabinets and shelves of games isn’t a hoard, it’s a hobby. It might be junk to someone else, but it’s still a collection that brings joy to the hobbyist. A garage full of broken equipment that’s a visable stressor on the owner but that they also can’t part with or even access as it’s under a layer of other clutter that keeps piling up? That’s a hoard.