Edward Greisch @ 296 said:
Science is not "fundamentally progressive"
Progressivism refers not only to the corresponding period of American history, but also to the notion that given sufficient time and effort, people can and should make incremental progress towards shared goals, scientific or otherwise. In science this view is associated with scientific realism, scientific pragmatism, Charles Sanders Peirce, and especially John Dewey, who held "that inquiry, whether scientific, technical, sociological, philosophical or cultural, is self-corrective over time if openly submitted for testing by a community of inquirers in order to clarify, justify, refine and/or refute proposed truths." (WP, Pragmatic theory of truth)
You should be grateful that science is progressive, because otherwise you would be busy rediscovering the foundations of mathematics, geology, astronomy, chemistry, etc. all by your lonesome self. In fact this was very much the situation at the start of the Enlightenment. On the other hand, if science weren't progressive, we wouldn't be struggling to mitigate climate change right now, because the industrial revolution wouldn't have happened.
The point of the non-existent dinosaur cultural artifacts was to illustrate that it's absurdly and dangerously reductive to simply equate humans with dinosaurs or any other species. If humans weren't special, why would they need names? Why would they need rights? In fact most of them didn't have rights until very recently, and it's been a major source of conflict. Wars have been fought over the idea that people (especially people we don't like) can be treated as things.