Balony. Bologna. No science to it, all opinion of people who are Luddites. Toxic is matter of level, not material. Eat a tablespoon of salt and get back to me. The amount of whatever red colorant in 2 quarts of water with sugar would be ppm, -parts per million, hard to calculate and probably ineffective as a poison at that level. Scare mongers always assume conditions waaaayyy out of proportion to what exists in reality, and use words synonymous they believe are negative. Petrochemicals are the feedstocks of modern life, without which many kinds of things would not exist at prices the common man can afford and replace wood and metal, freeing them for better application.
Like to stay organic? Coal is organic. Have a problem with plastic floating around the oceans? People elect politicians that elect to dispose of trash in the oceans. People is the problem, not plastic, or petrochemicals, or coal, or any material used by society. Want a clean environment? First, kill all the politicians. (Shakespeare, eat your heart out)