You are missing the point. The point isn't that the legacy methods of agriculture are unequivocally better. They have their downsides, some of the downsides are pretty severe. The point is that abolishing traditional farming in favour of industrial agriculture yielded unforeseen costs, the ones that were never even hypothesized when we started scaling agriculture. Now with AI and agents, we'll reap those unforeseen costs again. The profits will go into the pockets of the owners, the unforeseen costs (which include the costs of switching from one system to another) will become the society's burden to bear, as it was with industrial-scale agriculture.