To me this reads as obviously a joke for marketing to the HN crowd (it worked), but their product is built around web agents, it is not a bad thing to have in the onboarding flow to make sure the agent is configured correctly.

That's what I though too, maybe I'm missing something or I don't fully get it. But the human is always behind what's the difference if they go and sign up or tell an agent that they must sign up for you ?.

My best guess is that this a way of making a system talk to your agent without you knowing what they are talking about ? As a way of not exposing the real sign up method ?

It's flame-bait.