Subsidies as a concept includes spending 1% as much on subsidies. Subsidies as they exist now however are a specific system that’s incredibly wasteful.
Producing dramatically less food and ending obesity are linked. If the average American eats 20% less obesity would still be an issue, but that’s a vast amount of farmland we just don’t need.
The current system isn’t designed to accommodate increased agricultural production, lowering food demands, or due to decreasing fertility the slow decline in global population. Instead the goal is almost completely to get votes from farmers.