I would not rule out the influence of each their takeoffs being filmed.
Numerous accidents have been caused by pilots common sense being overcome by Luvvie fever.
It's not incredible to consider they were keeping the takeoff as low as possible for the cameras.
I think you have a point there. In this video of Aerosucre's final 727-100F flight before preservation, the low passes are
very low indeed:
https://www.youtube.com/watch?v=tWqZepVLI_8&app=desktop
That's showing off, all right.
That said, on the accident flight the aircraft is barely rotated; it's still rotating as it crosses the road. Even if showing off, if one could, surely one would get the nose up before crossing the end of the tarmac?