Ian W
I know its not Boeing's aircraft and l did not say it was.
You seem to be little naive of Boeing's involvement with regards to the insurer.
The aircraft can only be repaired with repair instructions from Boeing.
The Insurer and Boeing will work out the repair with its costs and then relay that to the owner Ethiopian (if they do own it).
Ethiopian could decide to write it off, but they will only receive the money that the insurer is willing to pay.