In some degree, I believe everyone is in that same boat. But I think it is unusual to mix your 'morals' with your work. This indicates that you like discussing random stuff with people at work.

I mean, avoiding allocating memory unnecessarily is not related to moral nor ethics.

And you know.. just because you have a moral opinion doesn't mean you MUST point out divergence with others, when they pronounce their world view. I really find it unusual to point out "morals" in a topic like this one.