The person who got short shrift is the person you initially replied to. They proposed individual virtue, and you used that as an excuse to raise a different point that you like talking about.

As for the bus thing, the people responsible for reducing deaths around buses are responsible for actually solving the problem. So I agree that they should not do ineffective things like they did in your story. Meanwhile, a person eating less meat is not responsible for making sure that overall meat consumption falls.

So there's no relationship between the two situations, and that's the non-sequitur. Sorry that I didn't get this point across effectively.