Medical doctors have a maxim "primum non nocere" = "first, do no harm".
Don't assume that the farmers are the only ones hit and that they can be simply waved away as a minority that has to yield to progress. Destabilizing agriculture in food exporting countries is a potential threat to consumers of those calories worldwide.
Humanity consists of 8 billion people, most of them living in countries that are barely self-sufficient in terms of food production or not sufficient at all. Net exporters are an important player in fight against hunger. Canada itself feeds two other Canadas abroad.
If countries like Egypt or Iraq or Nigeria go off the rails because of food insecurity, there will be political instability much worse than during the War on Terror. Canada may be insulated from the consequences, Europe will definitely be not.