Yeah. Some toxic/flammable gasses can be produced from landfills. But that toxic gas is not produced by plastic. So reducing the amount of plastic in the lan

Yeah. Some toxic/flammable gasses can be produced from landfills. But that toxic gas is not produced by plastic. So reducing the amount of plastic in the landfill isn't going to reduce the amount of toxic stuff. Similarly, the plastic in a landfill is not going to end up in underground water, or in rivers. So what's your point?