Let me simplify it for the sake of argument. Imagine I am unable to follow a middle school proof of Pythagoras. How does it matter if I trust anyone beyond that? What possible contribution can I build on top of that?
It's the old game that he's trying to preserve. It's time to move on to the new game. When the landscape shifts beneath you, its very low probability that the existing structures on the landscape are a good fit for the new landscape, and the structures on the new landscape must be rethought from first principles.
What do you mean framing doesn't matter? You just called the other post 'acidic' The idea that a CBA is somehow useful outside of any moral context is facially ridiculous anyway. You're just spewing word-mumbo-jumbo. The entire point of the law is to uphold the basic moral values of society in its function.