This is not a case of harking back to the good old days, nor should we be sidetracked by the need to quickly shut down in case the autofeather hasn't worked.
This is a clear case of failure to follow the correct sops, the FCOM and the correct shutdown procedure.
The report shows us what the screen would be like in the event of an engine failure of this sort. It tells you what to do, moving the power leaver to idle is item number 12 on that list. So even if you forgot the memory items, the aircraft reminds you!
It even tells you which leaver to move (1or2)
Whilst an engine failure is not run of the mill and your heart will be in your throat, with adequate training this should not be a major problem.
Training and rigorously applied basic standards.
Of note though the EWD screen shows white for Eng1, this is a non normal display and could be the reason why Capt A assumed Eng 1 was the problem. Not excusing just pointing out a possible physiological reason for his actions.
Although I point out the obvious failures, we should look at the reasons for them. Never assume you are immune from making the same mistake.
Dirty Prop;
Although Capt A had nearly 5000 total time only 250 odd was on this particular type!