A configuration warning system is installed to serve a purpose. Obviously the system worked as advertised.
What's all the fuss about?
There is not a single pilot I know of that would not report this kind of incident.
"Boss, we stuffed up. Will do our best not to do it again", can't really be argued with.
Does anybody here really know the full story. Was this their 5th sector of the day, or maybe a 2nd sector after just completing a redeye?
I can only hope to be as professional as "aircraft" one day.