Cobalt 60 has a half life of 5.27 years.
If the 7-1-63 is a date stamp of original manufacture, it’s gone through over 11 half-lives. There’s less than .05% of the original flavour.
I don’t know about the decay products, but I’d wonder how far we are from legitimately edible.
At this point Void feels like Slackware for the 21st century. It’s comprehensive and less full of “modern linux” hairballs than some others, but they seem pretty good on package updates. I like it being non-systemd as a first class thing rather than trying to backport it on an uncooperative parent distro.