The bottom line on cwd is this: they don't know enough.
They just don't know. It's possible that 25 years from now everyone eating venison today will turn into zombies. They don't know. They don't know enough to stop it, prevent it, or seemingly even slow it down.
So they can't make a positive statement. They can say that to the best of their abilities to test right now that the deer is clean. That's about all.
I've certainly considered whether eating venison and feeding it to my young kids is wise. I certainly don't know either. My family of 5 uses about 6 deer per year. So it's a large part of our diet.
I may regret that some day.
-Jake