JD-EE, The point was made to show there is more than one type of potentially erroneous output from a pitot tube. If the interior of the pitot tube is hot enough to flash fresh moisture to steam (and it doesn't need to be that hot) then you could see your airspeed indications going up instead of down after the first hail stone plugs up your pitot tube inlet.
Perhaps this type of thing accounts for the apparent difference between Thales and Goodrich probes.
How should you react to an initial mach alarm after flying into the top of a storm?
Would you just say its bogus, or begin reducing power? And then if all your airspeed indications packed up and everything associated with it downstream (like ADIRUs) began quitting, would you even remember you had just pulled a bit of power? Would you even be able to read your power setting in the turbulence?