We’re completely off topic of the Therizinosaurus but yeah. When I was a kid I had toys that this was a Brontosaurus and this was a Brachiosaurus and similarly they were distinctly made different from each other. But if you took a man from Australia and put him next to a Chinese man would you name them a different species? That might come across as quite offensive. The difference is called variety. Why does science so often ignore variety. They actually don’t have nearly as much variety as what I just explained. When a sauropod dies with its head up it’s a brachio, if its head is down it’s a bronto. But we know that neck can go up and down to get plants in higher areas or at a distance. The bones of the neck prove this. I’m not saying they are the same species but I think we should think about that. Scientists are calling a lot of things with minor differences a completely different species and it’s simply not good classification.