I don't think this is obviously wrong at all. Dispersing a fine mist of micro plastics into the environment, where it can enter the air and water system, is very very different than sticking a piece of plastic into the ground, where it will comfortably sit for a thousand years with minimal decomposition.
For a good example, here's [1] a study about how car tires, which slowly disappear into the environment, are a major contributor to micro plastics in the ocean.
I don't think this is obviously wrong at all. Dispersing a fine mist of micro plastics into the environment, where it can enter the air and water system, is very very different than sticking a piece of plastic into the ground, where it will comfortably sit for a thousand years with minimal decomposition.
For a good example, here's [1] a study about how car tires, which slowly disappear into the environment, are a major contributor to micro plastics in the ocean.
[1] https://www.nationalgeographic.com/environment/2019/09/tires...