Since John Stuart Mill, we've known that "cause" rarely refers to a sufficient condition, and that multiple necessary conditions always apply to real-world even

Since John Stuart Mill, we've known that "cause" rarely refers to a sufficient condition, and that multiple necessary conditions always apply to real-world events (positive or negative.) We generally reserve "cause" for the necessary condition that is easiest to change. I think it's also legitimate to emphasise general solutions over particular ones, however; as you do.