Non-clickbait headline suggestion: "Saudi Arabia cyber attack goal was chemical plant explosion; experts fear retry"
(Edit: meet length requirement)
(Edit: meet length requirement)
According to the article, investigators believe the explosion would have killed people, and notes that fatalities are a common outcome of chemical plant explosions.
Most cyber attacks just inconvenience people, or cost a little bit of money. If they can kill, it is a tertiary or more remote effect.
That this one was trying to do something that had it succeeded would have very directly and immediately led to deaths is what makes it interesting to a wider audience.
There is a reason the headline is written in this way. This is big news.
It's the same form as "You won't believe number 9!" in a clickbait top 20 list. It is phrased in a way to make you wonder "what is item 9?"
There is a combination of emotional content and purposeful, unnecessary ambiguity.