I know I have discussed this issue before on a different thread but I think there is some legacy thinking with regards to the safety implications of single engine aircraft.
Taking an example from the USAF produces an example of what I mean. In 2017 the USAF had 7 engine related class A mishaps (incidents costing >$1M and resulting in serious injury/death) on the F15 and none on the F16.
Statistical anomaly? Maybe. Small sample size? Definitely. However, it goes some way to illustrating my point. Sometimes having two engines just increases the chances of a mishap. Since they are very close neighbours, one can easily damage the other.
When your one engine can produce 43000lb thrust in burner and has been highly engineered then I think the old idea that two is better than one is not necessarily true any more.
So, maybe the USN doesn’t like single engined jets and God knows they have a lot more clever people than I working on the problem but things are not always as they seem.
BV