Yeah, some of Jenny's takes are pretty poor in my own opinion. I don't know what on Earth she is talking about with LBT 1 having no themes or lessons, or about the dinosaurs being "ugly" because they have detailed wrinkles and muted colors. Also, VII below XI? Engage me in fisticuffs, Jenny Nicholson.
Also, every time Jenny says "Brontosaurus", I just think of this.

You could make the case for Littlefoot and his species being brontos, as that taxa is now coming back into use among the apatosaurus name, but Doc? Doc is a diplodocus, as his name suggests.
She also called Mo a swimming dinosaur and Petrie a flying dinosaur. I'm not gonna judge her on this, since paleontology is probably not one of her areas of interest. I did cringe every time she said something like this, but hey, the video was about the quality of the movies plot and character wise, not about the species of each character.
If you're reading this Jenny, Ducky is a Saurolophus, not a Parasaurolophus, Mo is an Ichtyosaur, a swimming reptile that looks like a dolphin (not related to dinosaurs at all), and Petrie is a Pterosaur, a flying reptile that is also not related to dinosaurs. There were many species of longnecked dinosaurs, they're called sauropods. Littlefoot's design is a mesh between an Apatosaurus and a Camarasaurus. But sure, Brontosaurus was very closely related to Apatosaurus, so the confusion here is acceptable. As for Doc, he's a Diplodocus.