Not having one in front of me, I can only guess. Based on the photo I see one rivet on each end of the light-beige strap that is wrapped twice around the frame. If both these rivets failed, what is holding the binding? It appears it may be held on to the decking / frame by another rivet (the same one holding the decking on just head of the binding), in which case all the weight would be through the decking and not transferred to the frame (which then transfers it to the decking.) Again, this is just a guess... What am I missing?
Wait, perhaps you mean the attachment of the straps to the bottom of the binding itself?
Or, if the rivet breaks, then perhaps it will slide around some (forward/aft)? I was thinking if the strap broke at the rivet, then one whole side is gone.
(I am considering a pair of 1230/1235s at some point, the MSR Denalis aren't that great in 2'+ of powder, even with 8" tails...)