Nevertheless, computers which prevent the manual selection of reverse thrust (or even ground idle) because they won't be told that the (damaged) aircraft is actually on the ground......
If you smash up the input system then any computer will give you an unpredictable output. Did not the Brittannia 757 not do strange things with its engines after they managed to break the fuselage, and that was only with a 3.1G touchdown.
Even if the reversers had activated I doubt it would have made a significant difference to the outcome given the high groundspeed, relatively short runway and the absence of at least 33% of the braking capacity.