It's a normal human tendency for people to ridicule things they don't understand.
"If this trap was planned over a period of days it might give Al Qaeda time to acquire a man-portable SAM to attack the Chinook. Instead of a lucky shot with an RPG the chopper might have been hit by something like a Russian 9K34 Strela-3 or even a Stinger from friends in Egypt or Saudi Arabia.
But the insurgents wouldn't necessarily need a lucky shot with an RPG if the path between the LZ and the Rangers took the Chinook through a pass. A group of insurgents, up in the pass with RPGs, could fire a volley of rockets horizontally as opposed to trying to fire a much more difficult shot, at a high angle, from a valley floor." "I'm not saying any of this happened but it could have.