The “Runaway Stabilizer” checklist has ALWAYS told you to use the trim switches before switching to cut out, always! Read the memory items again....
“Control the airplane pitch attitude manually with control column and main electric trim as needed”
That bit is in between disengage the autopilot(if engaged) and disengaging the autothrottle(if engaged)
It is not a new thing.
In both accidents, no one was flying the airplane, they were riding along until impact