Regarding the above procedure and TOGA being inhibited:
I have watched a pilot off a 777 flying a simulator landing in a 737, he did a nice job of the entire session ( obviously a competent pilot in my opinion) and when he reached the flare he flared nicely but didn't reduce the thrust, even when we scooted along at 20ft for quite some time. Eventually I told him to close the thrust levers. This guy was a good pilot, but when his capacity was being used he had no motor skill memory for the thrust levers. It had been eroded from years of automation in the flare which was designed and introduced to increase flight safety .
I'm not suggesting this played a role in this accident as I know nothing about it but it is relevant to the discussion of automation in this case.