This is true. In the spirit of charity, what if we kill more businesses? Seems like doing good in the world can also have negative impacts we may not be aware of.
It still boils down to dumping. This is a hard problem.
You don’t want the global markets determining that you have a competitive disadvantage relative to peers and thus want to import all of your food and abandon your domestic production.
You also don’t want farmers hitting the prisoners dilemma issue of producing as much crop as possible because then farms die from competition. And again letting them die is not good for a critical industry like food.
Paying farmers to underutilize their land is a less insane idea than it sounds.