The pollution from Fukushima into the ocean was huge. It's not only about human death counts. And yes the same reactors as in Chernobyl are still in operation

The pollution from Fukushima into the ocean was huge. It's not only about human death counts. And yes the same reactors as in Chernobyl are still in operation today: https://en.wikipedia.org/wiki/RBMK#List_of_RBMK_reactors https://en.wikipedia.org/wiki/RBMK#List_of_RBMK_reactors . Including in Kursk where fighting between Russia and Ukraine is currently going on. This isn't an imaginary situation. They were mitigated to avoid this particular issue but I wouldn't consider them 'safe' without a containment building etc. And it's not graphene, it's graphite. Graphene is a nanomaterial that didn't exist for production during the envisioning of RBMK reactors. It was only theoretical and produced from 2004 onwards.