Would have to agree. Looking at Karpathys research career it’s hard to pin point something and say he’s the inventor of so and so. There are plenty of other researchers for whol you can easily say he’s the inventor of so and so and they have much lesser fame than Karpathy, for example Kaiming He for ResNet, John Schulman for PPO etc.
I don’t see that as an issue though, just a natural consequence of his great work in teaching neural networks!