Are you saying that has failed? It isn't obvious to me from that page that anything in particular is going wrong. I don't think anyone is daft enough to claim that AI solves the "Iowa remains unplantable due to winter conditions" problem.

Looking at the timeline they seem hopelessly behind. Its currently the planting window and they don't have land or a person to work it.

Ah, thank you. It's not the planting window yet where I am, north of Iowa, so I wasn't certain where they were.

logs suggest it's been 'critically failing' and 'blocked for 68 days' on farmhand introduction, although the logs don't go back far enough (and cut off too early) to really tell what's going on. https://proofofcorn.com/log

That's kind of the opposite problem -- the agent doesn't have robot arms or legs or a parcel of land. It has to rely on people to get access to land and plant and harvest the corn, and those people are ignoring it.