A couple of things about that scene have always bugged me, just a little. When Brett raises his face to drink in the dripping water, on a ship like the Nostromo, wouldn’t it be dirty? I know it was clean water the dripped on the actor, but the character would have gotten dirty water. Second, in a later scene, Parker describes the Alien as big, but even in this uncut scene Ripley and Parker do not see the creature. He’s gone.
I thought the directors cut was the complete scene, but this clip contains even more than that cut.
Brett doesn’t seem like the type of person that would care all that much. As for Parker, he says “whatever it was, it was big”. Not an illogical conclusion.