I would suspect that there aren’t many pilots who devote much, if any, specific attention to the VASI light indications, particularly after crossing the threshold.
In his official statement to the NTSB, the Co-pilot PF stated that during the accident landing he used the PAPI as his "primary reference" and he was "working the PAPI" down to the "25-30 foot range", when the Captain took over.
The Captain on the other hand said that she referenced the HUD, that she "loved the HUD" and considered herself a "HUD cripple" (dependent on the HUD). She stated that at lower altitudes the HUD would be in "instrument mode". And just before landing she would still "look through the HUD" though not necessarily reading the numbers on the HUD.