This site seems to promote organic agricultural practices as pesticide-safe but organic farming uses some of the most dangerous pesticides (e.g copper sulfate)

This site seems to promote organic agricultural practices as pesticide-safe but organic farming uses some of the most dangerous pesticides (e.g copper sulfate) precisely because of the anti-scientific requirement that anything used must be of "natural" origin, which is just the naturalistic fallacy. The bias here is clear.