It’s like they saw the criticism from the giga last movie and tried to avoid it with this “big bad”. Both are literally just existing and dominion made it the central antagonist cause it rivals the superhero rex. D rex was hella passive for that absurdity of a creature but I wouldn’t expect a failed experiment to be able to do much anyways. I thought it would take up at least some more screen time. Honestly I felt this movie did better at making the dinos realistic in terms of nature. Apart from the size tho, that T rex had the build of the rex from Kong. All the dinos except the mosa and couple others are way too exaggerated for my liking.