Not sure what the controversy here is. Catastrophe risk is the bread and butter of property insurance.
So I think structurally, the conclusion here is that 'cat bonds are an example of how insurers can work with abstract risks, and so any risk (such as global pandemic) could be worked with this way', and the rest of the book then examines how people are trying to actually do so with pandemic risk.
Insured->Broker->Insurer->ReinsuranceBroker->Reinsurer
Here, where you see reinsurer, instead may be: ILS fund Cat Bond