Automation or Crew problem here?
Let's come at it from a different angle. Airline crews (in the UK anyway) do 2 3-4 Hour Sims every 6 months, training in various areas, and being tested for various (serious) failures e.g. engine, whole systems (Hyd/Elec) and multiple complex failures.
In my opinion, a single RA failure leading to the Thrust being retarded prematurely to idle, would
not generally be included in a simulator scenario... It is rather trivial and probably considered a waste of time, particularly if, as per the Boeing comments, all the FMAs were wrong as well.
Just my view - others may differ...
But there are 2 crew and 3 ASIs etc. etc. in aircraft for a good reason, and we cannot really expect "automation" to cover every scenario - we are there to
monitor and intervene as required... not by choice, but because we are the safety backstop.
NoD