At Delta the procedure was changed after the second crash to add the Autothrottles step (we've always had the entire runaway trim procedure as a memory item). My point is still valid because United changed their procedure post crash as well (making it partially memory items). We don't know what the other airlines have for procedures, so blaming the pilots or their training based on an unknown procedure (and lack of all facts) is just wrong.

P. S. I didn't know until your post that emergency procedures were different airline to airline. I always thought a runaway trim was a runaway trim regardless of the airline.