The linked letter lost some credibility when they stated that corporate farms are dumping pesticides, herbicides and fertilizer into our streams. I have worked with farmers for over 30 years and have never found anyone using inputs in an irresponsible manner. Farmers big or small take pride in their land and improving their soils. Most are hunters and fisherman. No-till and minimum till farming, variable rate fertility programs and seed technology have all been good for production and the environment. Using inputs in an irresponsible manner just hurts their bottom line.
When statements are made with little knowledge behind them you run the risk of being labeled a radical.
We all want to enjoy our natural resources and pass them on to the next generation in good condition. We all also need to eat three squares a day, keep warm in the winter and drive to our favorite fishing streams. Be a realist not a radical.