The most powerful man on earth, Pope Paul V demanded Galileo silence his thoughts on heliocentrism. He was then submitted to the Roman Inquisition, found guilty, and imprisoned for the rest of his life. Somehow this is seen as comparable in Sam's mind to a reasonable debate about ethics (“If people live a lot longer it will be disastrous for the environment, so people working on this must be really unethical”).

Quite frankly, if you can't find the courage to have a reasonable debate about your ideas, you shouldn't be the one working on those ideas. If your ideas run contrary to public thoughts around ethics, perhaps you should move to a culture where your ethics more closely mirror theirs. Or more radically — listen to why people disagree!

This whole post comes off as someone who's realizing their ethics are mismatched with the culture they're living in, and instead of questioning themselves, demand that the rest of the culture shift to their views. In other words: let me be this asshole, because I deserve it!