Or more probably, it's imputable to biology and the natural replacement of the "old guard" by adults who didn't grow up during nukes schizophrenia. Or in other words, I doubt that those folks reasoned themselves out of the irrational fear for nuclear energy that they did not reason themselves into.
I'm not sure it's irrational. It's perhaps oversensitive. There are dozens of nuclear power incidents rated at levels of 5+, affecting the wider region.
In the UK, Sellafield was a nightmare. Lots of less serious slip ups and malfunctions punctuated by a few critical incidents, between 1954 and 2003. You might understand why yesterday's Green Party might think it an issue worth pursuing.
"the environment is improved one funeral at a time" -- Planck principle
https://en.wikipedia.org/wiki/Planck%27s_principle