Earlier quoted context omitted.
I don't think he is saying agents are not useful at all, just that they are not anywhere near the capability of human software developers. Karpathy later says he used agents to write the Rust translation of algorithms he wrote in Python. He also explicitly says that agents can be useful for writing boilerplate or for code that can be very commonly found online. So I don't think he is saying they are not useful at all…
I’m not saying he’s saying agents aren’t useful at all. It’s literally in the quotes I provided that he says they are useful for some subset of tasks. I’m saying that he is answering the question “are agents useful at all”. not “can agents replace humans”. His answer is mostly not. He generally prefers autocomplete. But they are useful for some limited tasks.
I'm not saying you're saying he's saying agents aren't useful at all