Based on my experience, you managed to described like every rural estate situation I’ve ever seen. Household living in a trailer towed onto their parents land. That household probably doing a lot to take care of their parents. Then the parents die and suddenly some relative no one has heard from in decades comes along to really screw things up, often from an urban area with zero concept of the market realities of a poorly mantained house on rural land.

I get the whole “hoarding sucks” but it’s really only an urban problem. Go to a rural area and you can find plenty of housing stock for cheap.