I never claimed raping one to protect five is analogous in any way to eating meat. But I can easily imagine a situation involving meat that would be analogous to the rape scenario. Let's say there is a magic button that turns two random meat eaters into vegans but gives the person who presses the button a disease that makes them die if they go more than one day without meat. Would it be wrong for the vegan to press that button and become a meat eater, even though the creation of two extra vegans in the world would do more than enough to compensate for that?

Note that my question is hypothetical. It is possible to say that it isn't wrong in principle to press the button, but that in real life we shouldn't tolerate anything short of strict veganism.