for psu's it is within spec to safely deal with the tested out-of-spec use
Where in the ATX12v/EPS spec is this specified? OPP is a feature that they decided to implement and is not part of the spec.
They directly addressed the GN complaint about OPP being set too high. In other news, GN didn't engineer the PSU nor were they aware of the design goals for the product or what was originally contemplated when setting the OPP where it was.This is only an impossible position if the company stubbornly persists in its own righteous we did nothing wrong stance.
I'm not sure either choice in response would yield a material difference in reputation harm. Recalling is admitting that they are wrong and then GN will take a victory lap on a regular basis reminding people how their work got the recall to happen.Guess which one does the least harm to their reputation regardless of the actual quality of the product in question.