Yes, these are saying what a great source of nutrients are available. In your last link, it says...
Research Highlights
► Red Deer meats are a good dietary source of Se, Cu and Zn. ► The consumer can also benefit from the Co, Cr and Mn present. ► These benefits may outweigh any risks associated with Cd from metallothioneins in organ meats.
uncontaminated areas....Show me where those are...
I couldn't tell you tbh. I don't have access to the full study; only the abstract. They studied 20 deer in Poland. I don't know if the background to this study had anything to do with a chemical spill of some sort or just a general population thing. The result shows that it's safe to eat the organs of deer.
It was a very isolated area...
The deer seemed to be in excellent health (before they died) so that's good news :)
yup it is...
:D