HC - no more so than tail rotor blades that depart the airframe, cabin doors that fly through the main disc, in flight rotor brake applications, or perhaps more pertinently, MGB's that have inadequate oil lubrication design that leads to catastrophic failure - despite certification implying otherwise!
I think a broad survey of CH47 failures over the last 4 decades would reveal that the interlocking rotors are not the prime reason for concern.
You know as well as I that its meticulous attention to design and rigourous CAME processes that are the keys to safety, not something a little bit different about the overall design.
Bond has been undergoing significant organisational change in recent years - now that can effect flight safety just as much as any design or engineering process faults. I suspect they may about to undergo more!