My issue with pointing out the math error is that it isn't even the actual problem - the entire concept is based on the incoherent idea that having a trade deficit is inherently a bad thing for some reason. The entire formula is junk, not just the one variable.

Stalemate rules mean that a player in a heavily disadvantaged position still has the opportunity to play for a draw, whether that comes from their own clever play or a mistake from their opponent (what happened in the comic).

Plus, even if all illnesses could somehow be limited to just the people who actively drink it, they give it to their kids who have no say in the matter.