That's what a functional government looks like. High-information, low-controversy, consolidating citizens around a shared truth.
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Edit: Huh, a totally legitimate question that points directly at the underlying cause, and downvoted to the limit. Does it hurt that much to admit that people are getting exactly the government they want?
Of course not. Civil defence is a good thing, sticking your head in the sand is not. Also, the brochure is not just about war but also about other crises. Sweden can experience 'interesting' weather which can leave people out of reach of rescue services for a while so 'be prepared' is just good advice.