Its not meant for our eyes. Its very likely that the old version of the JP4 script opened with surfers being attacked by the Pteranodons (just like the Sayles version opened with a little league game attacked). This was done by an outside VFX studio to add a little flair to the pitch, show how a scene could play out. Its not by ILM nor is it meant to sell the story or VFX quality. It was simply to try to get execs excited at a new Jurassic Park film.
I've never heard of that. Visual pitches don't just take individual scenes from a draft of a script and recreate them using low end VFX (understandably for a pitch) with almost no visual flair. Especially for a sequel. Unless of course said sequel was taking a different route visually or was taking a radically different approach like the human-dino hybrids.
A visual pitch is usually a specific presentation to demonstrate the looks and feel of a film. What was shown displays none of that. It's just flying dinosaurs..., ahh but the twist here is that they are gobbling up surfers.
LIke I said it just doesn't ring true to me at all. Something about this feels off.