People failing to plug in their cables all the way isn't really Nvidia's fault. Also, in-house testing is only meant to catch problems that may arise when the product is used as intended and the plug isn't intended to be 2-3mm short of fully inserted. There does not appear to have been any further public reporting on this issue after it got confirmed as user error in just about every case that got looked into back in October.
if there were only a handful of burnt connectors with the 4090 cards, that would be user error, but with the amount that there has been, is a design flaw, plain and simple. the " user error " nvidia is claiming, is BS and is just them passing the blame to someone else