People who write advertisements have a very fixed idea about farmers, or at least the way they should be portrayed.
They are almost always shown as rough and ready blokes (and they are almost always blokes) who speak like Fred Dagg, and know little and care less for urban people.
That stereotype helps build the idea that farmers aren’t particularly intelligent or articulate and that what they do doesn’t require much skill.
This Facebook post from Peterson Farm Brothers paints a much more realistic picture:
(ORIGINAL) Farmer AKA Mechanic, Agronomist, Engineer, Economist, Businessman, Accountant, Architect, Doctor, Manager, Electrician, Plumber, Veterinarian, Communicator, Teacher, Conservationist, Nutritionist, Carpenter, Biologist, Technician, Trucker, Maintenance worker, etc.