I only have two or three CDs that seem to be suffering degradation of the lacquer side but I do worry about future longevity of CDs.
Regarding packaging, I remember reading this in the nineties. Luckily a web search was easier than than I thought it would be.
Cheap Packaging
That 1994 article is basically about original bronzing outbreak, tracked to the use of sulfurous cardboard at one factory. It warned darkly that if other factories don't check their paper stock, we would see more bronzing. But it's been almost 30 years and no explosion of bronzed discs has been reported in the meantime, indicating either that the error really was local in the first place, or other factories quickly and quietly corrected it at their sites.
So if you worry about the longevity of CDs, this would not be a good reason.