On an NPA approach, above minimums, not visual why would any sane pilot disconnect the automatics
Quite so especially when the final result indicated both pilots lacked basic hand flying skills on instruments. The report indicates the approach was flown on automatics until near MDA when the first officer disengaged everything and continued manually until the captain took over and continued manually into the sea. It proved beyond much doubt what many have long since known. And that is many of todays pilots lack basic instrument flying skills. Automation addiction fostered by company and manufacturers SOP's has much to answer for.
The whole approach could have been easily flown manually and on raw data by any half decently trained pilot. Moreover an instrument rated pilot in a Cessna 172 could fly it. Yet both the pilots lost the plot once the first officer made his own decision to go manually on instruments and within seconds his poor instrument flying ability immediately caused the aircraft to become unstable.
Worse still the captain was driven by the local culture that says that real men don't go around and he too deliberately ducked under. Interesting that he exhibited the same tendency in the simulator judging by comments in his previous training record. 15,000 flying hours in his log book showed he must have got away with unstable approaches for years.