I don't get it. How many airfields have big wooden things (aka "trees", as in "woods"), big iron things (aka "pylons" as in "power lines"), big steel things (aka "cars"), big brick/concrete things (aka "buildings" as in "towns"), big water things (aka "lakes" and "rivers"), or big earth things or gaps (aka "ditches" or "dykes") 300 meters from their threshold? All of which can kill you just as easily as these steel rods.
Now if these steel rods were located in the guaranteed clearway that surrounds the runway, there would be an issue here. But 300 meters?