Talking about the Kriegern Family's broken affairs isn't pleasant.
But Durin had seen this device that could revive life with his own eyes, and Eleven had also confirmed its working process.
So Durin dragged the old men and women over, pulled up a blackboard, and explained the working principle of this device in detail. In the end, Durin came to a conclusion, "In the hands of others, this machine can indeed revive their own people, but for us, using this thing once might mean our camp can never wash itself clean again."
The Tri-Saint Society was, after all, a collection of families that had only recently reforged their vows, and they understood all too well the terrible curse that breaking a vow again would bring to their family—the curse of breaking a vow once is completely different from breaking it twice.
With the former, you endure it, and maybe after dozens of generations, the effect of the curse might weaken.