The discussion started out as "is it better to do something, or do nothing at all", which is outside of morals, but more about motivation and actually doing something.
Obviously if it's a horrible moral choice (i.e. Hitler) then sure, it's best if nothing is done.
In the very vast majority of cases ( build a better car, spaceship, software, grow better food, get fitter, learn a new language, help our community, be a better friend, etc. etc.), then doing something is much, much preferable to not even trying.
