There's ethic, and there is practicalities. RMS stands by the former, while many engineers think mostly about the later. I wouldn't say that thinking ethically is a bad thing, but it may hamper things, because it usually deals very poorly with a situation already unethical in nature.

There are more than 7 billions people on Earth, but barely enough resources to content everyone. Pushing resource extractions will damage the ecosystem, but not doing so will provoke millions of deaths. Preserving nature is a laudable goal IMHO, wouldn't you agree?