Doz wrote
The computer would cheerfully have given them ground spoilers if the thrust lever was in the correct position
Doesn t this contradict your own statement? The computer (decides to) 'gives' GS IF the pilots do/had done ... So it is the computer that makes the decision here, ignoring completely that one of the human inputs was incorrect... And allowing them just a few seconds to figure everything out, to correct their error (obey my logic!) because overriding the logic isn't possible!
I re read the Taipeh report, and it is cristal clear in its conclusions and recommendations. (although I m amazed about the poor English) It was AB's decision not to make the adaptation mandatory, and the aviation authorities apparently didn't see it fit to override this decision. Had they overriden it, perhaps this accident would never have happened.