Not a bad idea to say "this is a material that behaves differently than others, here's why." They sit right next to the regular runners. But yes, there should be some user responsibility.
Interesting that people are trying to shed weight with skinny runners. If that's what's preventing your send, well I guess you're climbing hard. I use a few myself, knowing they won't last forever and will melt easily.
The test could be repeated in a controlled setting. I may try a few older ones to check it out with a dynam. My guess is Mammut is on top of this stuff.
Que the rockclimbing.com elaborate contraptions for attaching two slings together...