Right now, that is true.
But what happens when Dicamba stops working?
What happens when the next Dicamba stops working?
We will be forced to return to the old ways of farming eventually whether we like it or not.
And by old ways I'm talking about polyculture and basically just growing what's right for your region.
It isn't though.
> lower economic footprint, less land used per output, less energy spent per calorie
Small farms are actually a lot more efficient than large farms in everything but man-hours.
Think about it like this: If you had a 10 meters by 10 meters garden vs someone who had a 1km x 1km field. You would make sure every square cm in your garden is irrigated properly, that no insects are munching on your plants and each plant has the right amount of space and correct soil treatment for maximum yield. On a large farm, you cannot possibly do that. The total yield is a lot higher but the plants are not as healthy and are not living under optimal conditions.
We will do what we always do and adapt and continue to make the world a better place.
The past is an awful awful place why would you ever want to go back there.