This particular airport in my opinion is an accident waiting to happen and it has nothing to do with the rwy nor the terrain at the end....., afterall, there are thousands of airports with those specs around the world and you don't see people going bellow their 3' VPA into the touchdown zone. 34R/16L in Narita is about the same and you see operations everyday with 777's on down without seeing these spectacles of trying to touch the top of the fence with the mains.
I believe that it has to do with the beach and the next youtube video showing your plane being within reach of the girls at the baech......., for show! That's all, there is simply no operational reason as to why the aming point seems to be the start of the displaced threshold markings.