I don't suppose anyone is suggesting reading TEM handbooks in the cockpit as a risk management practice?!
When I'm passenger on a long haul flight I'd rather have the crew up front read TEM handbooks than dying of boredom.
Seriously though, what you will probably find is that a large number of those risk assessments are geared towards industrial production and apply statistics gathered from a large number of production runs. Because of this, these methods would work fine for very large organizations like the CAA (assessing the impact of certain measures that need to be taken cross-industry) but are rather less suited for an individual pilot who needs to make a go/no-go decision for a specific flight.