I don't remember where I read it, but Dinoland says really interesting things about our relationship with animals and would act as a great exclamation point to Animal Kingdom's message if it was just a little clearer.
People are notoriously obsessed with dinosaurs; in Digg's County we see how the discovery of some bones (not an actual dinosaur, just the remains) completely transforms a whole town into a dinosaur hotspot where a ton of people make their living off of these remains. Chester and Hester's is nothing special, yes, but that's part of the point; the characters canonically rake in cash from that thing because people will pay for dinosaurs in any form. Something that's very true; roadside attractions based solely on static dinosaurs continue to exist.
Despite this obsession, no one has ever seen a dinosaur. No one ever will. That grounding in reality, the knowledge that these were actual creatures roaming the world at one point, is a large part of what fuels our cultural love of them, but, as the Dino-Institute says, extinction is forever. No matter what happens, no matter how much we all love dinosaurs, we will never really see one.
One day, if we're not careful, that could be the beautiful animals you just got to see in the other parts of the park. Would you rather your children and grandchildren experience the Maharaja Jungle Trek or Tiger-Rama?
I don't expect anyone to give it points for that because it's definitely in the "if I have to read a pamphlet to understand it it's not working" category, but I do think it's a really neat way of emphasizing the importance of conversation. If they were allowed to build what they had originally intended and the Dino-Institute housed a calm dinosaur safari it probably would have come across better.