The absence of evidence isn't evidence of absence. The truth is we have no clue what the long-term effects are for the chemicals we're exposed to -- for all we know, the 50% drop in male sperm count over the last 30 years is related to pesticides. [1]
Additionally, there's something a little forceful about the tone of this piece that I find very suspect. If organic pesticides like copper sulfate are dangerous, doesn't this just mean we need even higher standards for organic?
> If all of the United States were to go organic, the cost would likely be around $200 billion annually from lower productivity.
This is a strange argument. Eating organic hurts the economy? The whole point of the economy is to make our lives high-quality.
[1] https://www.scientificamerican.com/article/sperm-count-dropp...