The site itself is flawed, that is not a good LZ spot.
If you want to craft a LZ, and you have hill top traverse like in the video, you want to have the LZ on the reverse slope of the hill, and secure it so you only have 1 side facing the enemy, that way it's a lot easier to defend the LZ when the chopper come down.
In the video, you saw the chopper land on TOP of the hill silhouette against the sky, basically you are presenting yourself as the biggest target as possible, you may as well hang a banner over the Mi-8 saying "Shoot Here"
That did beg a question tho, that bad of a choice usually mean that is an emergency LZ (for picking up wounded or VIP) which mean Taliban should not have known before hand. Or the afghan being this dumb and pick this spot as their regular LZ? Not sure..