Chemicals are chemicals.
There are chemicals in the animal waste used to fertilize the organics. The plant or the body doesn't know the difference.
While this article seems a little crunchy and whatnot, there is a difference.
If a bird lands on a pile of manure, it does not drop dead on the spot; the same cannot be said for many farm chemicals. Manure does not kill trees 10 miles downwind like broadleaf weed killers that are in common use.
I know we would all starve without these innovations, but there is a downside and a cost.
Sure Chemicals are Chemicals. I am sure you love your bowl of nitrogen in the morning.