Equally amazing is that it is not understood that ETOPS was promulgated primarily to deal with the propulsion systems and other aircraft systems were just bridesmaids.
If you have a raging fire in your cargo holds or anywhere else, it matters squat how many dongs you have!
It would be LROPS, if you want to consider the fire suppression systems. Most ETOPS aircraft have fire suppression capability of more than 240 minutes.......anyway what do I know?