If you buy a stock and then use your influence to destroy its value, you're punishing yourself for your own bad decision. A lot of real human tragedy is caused by self-destructive behavior.
Now, here's an interesting thing to consider. You bring up coal and oil - both industries that are on the way out in the long term. Would it be wise for shareholders to push these companies to invest in R&D to improve their long-term capabilities? No, if coal and oil are on the way out, then the best financial strategy would be to run the companies into the ground as you slowly liquidate them, ideally so that there's nothing left on the very day that fossil fuels are no longer needed. In that case, short-termism is the best strategy.
Now, here's an interesting thing to consider. You bring up coal and oil - both industries that are on the way out in the long term. Would it be wise for shareholders to push these companies to invest in R&D to improve their long-term capabilities? No, if coal and oil are on the way out, then the best financial strategy would be to run the companies into the ground as you slowly liquidate them, ideally so that there's nothing left on the very day that fossil fuels are no longer needed. In that case, short-termism is the best strategy.