Unfortunately it's very easy for the uninformed masses (especially with topics such as nuclear power, not the most accessible for most people) to pick up on some of the more unrealistic details and build on their preconceptions or misconceptions. And the "entertainment" part tends to leave a more lasting impression also because they are more dramatic. And then there's that misconception that shows based on true events are somehow more documentary than art. So in such cases movie fiction easily turns into urban legend "facts".

The fact that the author of the article is part of a pro-nuclear lobbying group doesn't automatically contradict or discredit the opinions of the doctor that's featured in the article. They come from the actual guy who was there for real to treat the people.