Repeating my comment from the last discussion: This whole thing is an offshoot of antinuclear FUD. If civilization collapses to the point where people no longer realize that radiation is dangerous, then so many people have already died that a few more people dying early from radiation is just background noise. In addition, knowing human nature and our propensity for conspiracy theories, there will be people in the fu…
This precisely had me thinking about a science fiction plot, along those lines: human colonists discover a massively booby trapped monument left behind by some long extinct alien civilization, and make great sacrifice to penetrate into its depths, only to realize in the end that nothing was hidden underneath except radioactive waste.
Edit: walrus01 beat me to it!