That's true as far as it goes, but it seems to me that jumping into a canal to rescue a drowning child is as morally easy as it gets: your explicit beliefs are nicely lining up with your intuitions and emotions.

Eating ethically is much harder; it involves the ability to make some sacrifices without the benefit of strong emotional spurs. Vegetarianism/veganism, assuming it's based on essentially consequentialist reasoning (not all of it is), is basically a real-world application of "shut up & multiply," which I find admirable.