Quiet Spike
Nowhere did I use the word "safer", I used "advantage". With over 4,000 hours in four-engine planes and 2,500 in international two-engine. bizjets, I believe safety isn't the issue, but capability with an engine shutdown is. Admittedly, not a large issue, but could be a telling one for trans-polar, trans-Siberian or long Pacific flights.
For example, PANC -UUWW, would you really want to put your plane and pax into BGTL after a engine loss or fly for 4 hours on one to northern Norway. The other option is a flight at lower latitudes and much greater distance and time
GF