But I think your explanation sort of highlights why promises of "safe nuclear design", at least in my opinion, have a tendency to be overstated by nuclear proponents, and then result in a complete backlash against nuclear when things go wrong. Fukushima was a Level 7 disaster, on par with Chernobyl, that will result in large swaths of Japan being uninhabitable for lifetimes. Trying to make a distinction that it wasn't really that bad only makes your average Joe discount any assurances that "passive safe" is safe at all.