Cut them a bit of slack.
The report is, obviously, written from the point of view of the insurer and the numbers are what they would consider the insurance cover to be. Think of insuring your house, if it burns down you have the obvious replacement cost but also additional costs covering where you live in the interim.
The Reckitt Benckiser number is the immediate replacement cost. There will be other costs that would not have been considered in this statement. So while the report numbers seem high they might not be as overstated as the commentators suggest.
Secondly, if you are going to attack the numbers it would be more productive to flag where their model is wrong. They have at least run something up the flag pole so maybe make it better.