Yes another great read, for the land of the free and brave.
On the other hand, each time such a thing surfaces the most surprising is always that it seems to have surfaced due to this automatic declassification mechanism that I've never heard of an equivalent anywhere else in the world. In most places, including many modern and wealthy democracies, I believe you would just expose yourself to troubles if you asked for some clarifications about any ancient classified material.
I wonder if there is any recommended source to learn more about how this law/practice came to be?
this dark current should be excised from society as the declassifications show they more often undermine our security from domestic and foreign sources
And some countries have interests to protect.
That's the difference. It's not morality, it's whether or not you have anything to lose.