Oil/Gas/Petroleum is essential for our economy to function, and the line between "ethical" and "not ethical" is a dial (one among many that all need to be tuned together), not a switch.
$PTL/Inspire does not adjudicate "dial" ethical issues, just switches -- company practices/policies that it views as black-and-white good/bad. "It would be ethical if you produced N% less" doesn't fit that category.