Is the point you're trying to make that nuclear and fossil fuels can both be dangerous during a natural disaster? I don't think anyone will dispute this.
Well, I guess most people don't, but then again, they don't dispute this in the same way folks say "All politicians are bad!" - and when they go to voting booth, they always pick a particular party of their choice. And they come back, and until the next election they keep saying "Bah, politics! All politicians are bad!"
The majority of our energies are generated by fossil fuels, in most industrial countries. This has to stop - I think that's much more urgent than arguing between nuclear and renewables.
But nobody talks about Kessennuma, and nobody brings it up as an evidence that fossil fuels are an inherently dangerous technology that must be purged from the earth to protect our children. Because, apparently, dying in an oil fire is not scary enough.
[1] https://en.wikipedia.org/wiki/Kesennuma
[2] https://www.kesennuma-memorial.jp/english/