The obvious thing to point to is that we’ve acquired more complex language, which enabled us to do various neat things. To which I say ok but a zip file of floats and an algorithm has that too.
Eukaryogenesis was probably a more significant / special historical moment than language or writing.
I think this is all driven by people’s fear of their own insignificance. Is the pig that I ate last week really that much different than me? When I too die and turn into dirt or ash is that really it? It’s all over? Just like that?
So what would qualify as being special? I haven’t seen a compelling argument as to why we are.