The Daily Mail has a somewhat illiterate readership. It's a tabloid. That said, it has won numerous prizes because, at times, it really does a good job.
The kind of people who will say that there is nothing wrong with nuclear warfare are the kind of people who will believe the bullarkey given in the DM article.
They genuinely believe it will be that easy to survive. At times like this, I opt for an educated leadership.
Years ago, there was a book with the title Level Seven. It was about the survivors of a nuclear war, and the people on Level Seven were the best protected. In the end, they all die.