There must be some way to play their own game against them.
Go sue them for using up more than their fair share of the air. Make sure you do that in a court where they are filing suit.
“There must be some way to play their own game against them.”
There is. Find a friendly court and a friendly lawyer. Sue them for 100 million dollars for wrecking the environment.
Cite every unintended consequence that the group has done. Things like burning down homes and forests in California because they did not allow old growth cutting.
Do the same all over the country.