[Update a couple minutes later]
Here‘s a piece from Slate that I missed a year ago. No one seems to offer a single reason not to go this route, other than “it requires study.” It’s been obvious to me (as I said) for years.
I assume, or at least hope, that if the farmer wins, it will open up a lot of other lawsuits, to dismantle all this nonsense that goes back to the New Deal. It’s the Commerce Clause run amok.