You raise a very good point. In chemistry/biochemistry there’s a rudimentary guide called LeChatelier’s principle: when a system in equilibrium is stressed in a way that the equilibrium is disturbed, it will respond in a way which will restore it. To me applying this will mean if you suck away gastric acid your stomach lining will continuously secrete more acid than it’s really meant to. That can’t be good for your overall health. Unless you’re looking for acid production gainz like a xenomorph.