Jack,
The new belt is alot more reliable than the old belt thats for sure
the pump/pulley assembly is vastly improved, although the bearings had some growing pains.
it is rare to suffer hydraulic failures now compared to years ago, but isn't impossible.
I also see, if the identification of the aircraft is correct, its a B3e, so it has dual hydraulics and dual pumps, one being direct drive off the MGB.
While the dual hydraulics have an overload sensor to warn you of impending servo transparency, it can be missed or ignored, it doesn't stop you from flying into the servo transparency
the final outcome of this accident will be an interesting read, but I fear it's just history repeating itself.