As for Rock and Snow selling them the liability becomes moot since the CCH hangtag somewhere will have a disclaimer of...climbing is dangerous and the user does so at their own risk.... and Rock and Snow somewhere probably has posted on their property something along the same lines
Disclaimer means nothing if you can prove the company was negligent in manufacturing, QA/QC, etc.
In the case of CCH, that would actually be relatively easy, but perhaps moot in another way now that the owner is deceased, depending on assets left, how they were divided, incorporation type for CCH, etc.
I would think Rich has consulted a legal opinion and has obviously decided he has no or limited liability, but even if you doubt Aric's tests (I don't, BTW) no way would I be selling Aliens given the history if I owned a shop (because there is no way a shop owner could deny NOT knowing about the well published failures [note the plural]).
TS