Just a thought ...
Not saying this was a factor in this incident , but in several cases , the 250 below 10000 default in the FMS has caught folks out. For example, going into a high altitude airport ( eg Nairobi / Tehran ) , if you don't modify this slow down point , following a standard 3x profile may cause you to be still doing 320kts , at sub 5000 AGL as you transition thru F100. I see this aspect of the FMS as a HF weakness that has caught several pilots out in the past. There are other factors , but this default if not modified can catch folks out with terrain closure etc.
Ask Emirates how many they have had!
Now CSA is heading to Nairobi for example , I am waiting to see if the same thing happens there. And yes , I have mentioned this to those in power so it's not a case of sitting back and letting it happen, just wondering why the FMs can't reduce speed below 10000AGL as it has elevation input , or if the terrain GRID mora is > some value slow down based on that for example.
That way you would actively intervene to maintain speed in some cases , but at least would have to think about it.
And yes that's what pilots are supposed to do anyway with terrain- but they are also supposed to be able to fly aircraft away from stalls , upsets, speed loss , not into sea walls ...need I go on ?