Standard response from Ethiopean (see
https://www.bbc.co.uk/news/world-africa-62602611)
In a press release, Ethiopian Airlines confirmed that the the crew had been removed from future flights pending further investigation.
"Appropriate corrective action will be taken based on the outcome of the investigation" the statement read.
"Safety has always been and will continue to be our first priority."
My emphasis added, so why are they (and others) continuing to send out unrested pilots assuming fatigue to be a factor?
In a long gone era I would often ask to sit in the cockpit on long haul flights and can't help feel that the crew enjoyed some of the conversations we had and probably because it gave them a bit of variety. Though they usually seemed to have a fair bit of "admin" to do as well, I've no idea what it is like now.