A couple hundred kits? Pftt! I just sold off the bulk of my stuff (about 1000 kits), and that is nuthin' compared to some collections out there. I know of two people in my neck of the woods who have 10,000+ kits.
Yes, it is hoarding. But I rather they have it now, as compared to someones mom throwing them out 30+ years ago when he went to college. Sooner or later, most everything hits the market. And so will those.