I think he's legit.
Especially when he says that the creatures were almost necessarry.
He's absolutely right.
Spoiler
The mutated worms/cobralien are cool but serve no purpose whatsoever.
The carzy mutant isjust here to bring some action, he just go berzerk and kill crew members.
Only Holloway infection leads to something.
The rest is dressing.
I would have done without it.
I would have liked that the movie focused on the Engineer and what happened to them in that base.
I do know what happened and you will know too if you're an ALIEN fan like all of us but i would have liked that THIS EVENT had repercutions seen in the movie.
Wich would have made a great final act.
As for the rest, he dwells to much into over analyzing the movie, it's a love story, its about frustration.
I like to do that too, but at first i need to analyse it, script wise, production wise, cost wise.
I now know that Scott choosed to make his final act smaller than what it was supposed to be.
Either its because of production cost or because he wants to keep that for the sequel i still don't know.