The Ford F150 comes in many different designs, some more HD than others, with higher GVWRs, and higher RAWRs. The Ford in picture should have the towing mirrors, if it was the heavier Max towing version, like pictured in Mitch 150s post. The mirrors were part of the max tow, thru 2014, as were many other upgrades. No, truck in pic did not have an aluminum bed.
I witnessed a mid sized FW falling on a similar year Ram 1500, and while the bed was damaged, it did not look like that.
My guess...the truck pictured may have been moving at low speed, when the FW disconnected, causing much more force on the rear of bed, to cause that type of damage. The pic is not telling the whole story.
Jerry