This seems like a plausible argument, but you can extend it to any source of fossil fuels. What's wrong with providing oil from my oil well, since it's a substi

This seems like a plausible argument, but you can extend it to any source of fossil fuels. What's wrong with providing oil from my oil well, since it's a substitute for oil or coal from another provider that would have been burnt anyway? At the margin, some of it must be competing with renewables. Additional supply of fossil fuels - cheap, or even negatively priced - must drive down the price of energy and make investment in renewables less attractive. Incinerating plastics is only good if landfill is bad. Landfill really seems like it could be made cheap and safe: a landfill of a single cubic mile would last the US for 20 years.