Fukushima has severity 5 risks, and some people are willing to accept them as long as they think the likelihood is 1. But not you, and that's fine. Me neither, btw.
This is the problem that new technology is trying to address. Eliminate the severity 5 risks.
But a lot of people are resistant to taking stock of what's been eliminated so far and what hasn't. That's the problem with the public discourse. That's the new information that people reject. They only think along the likelihood axis and can't recognize when the severity has been reduced.
Going back to your concern. TEPCO is an operator. They can only affect the likelihood, not the severity. That's why I don't want to debate you about them. I don't want to convince you to accept a severity 5. I want to ask you where you think we are in eliminating the severity 5s.