JS.
I think that even though the plane looks very heavy, and even considering the length of the strip, this is still pilot error. I think any pilot who was taught well would have been able to take off from that strip, with the same variables, or at least recover whilst in ground effect from earlier errors. (pitch down to fly level in ground effect, speed up then climb). I can't understand why the pilot opted to keep pulling hard on the yoke, it looks rather clear ahead, why stall it?