That’s definitely false. Only a small percentage of people globally die while in water, while nearly everybody dies in a gas.
Plus, you are ignoring the addictive properties of gasses. While withdrawal symptoms of moderately addictive water take days to get serious, the withdrawal symptoms of much more addictive gases occur within only a couple minutes.
A sufficient amount of violence can solve all problems. It’s not necessarily the best solution for any given problem, or even a good one, but it’s definitely a solution.