"...the runway design "absolutely (did) not" meet industry best practices, which preclude any hard structure within at least 300m (984ft) of the end of the runway."
"it emerged that remarks in Muan International Airport's operating manual, uploaded early in 2024, said the concrete embankment was too close to the end of the runway."
I mean that was a pretty obvious design flaw that went against common standards. I agree it isn't cut and dry yet but an investigation isn't going to change the above info.