San Francisco just launched a lawsuit against Big Food that sounds like a historic public, health stand, but almost no one is asking the real question: is this an actual attempt to challenge a billion-dollar industry, or a perfectly timed PR move for City Hall? The city is suing 10 major companies — Coca-Cola, PepsiCo, Kraft Heinz, Kellogg’s, Nestlé, General Mills and more. They’re argued that ultra-processed foods fuel obesity, diabetes, fatty liver disease and massive public-health costs. They