Closing nuclear powerplants early makes for a self-fulfilling prophecy as well, unfortunately.
The only solid argument against nuclear goes along the lines, ``nuclear power is too expensive because of the costs of disposal of wastes''.
Thing is, in normal operation the cost is amortized year by year. Normal life of a nuclear plant is a few decades; say 30 years. Could be longer, but the technological progress is so fast it just makes sensible to replace hardware before it's completely worn down.
But it becomes a hefty one-time fee if the plants are closed mid-life. The overall costs barely go down. The difference in amount of waste is small -- because large portion of nuclear wastes stems from decommissioning of the plant itself. The spent fuel itself is not that much. [1]
And the headlines in press go, ``See? It's too expensive''.
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[1] been touring recently a nuclear powerplant in Greifswald, Germany, that undergoes decommissioning right now. Most of the waste is NOT the fuel, but infrastructure of the plant (granted, it was built with old technology).