No, it just means our body knows very well how to regulate less acidic stuff coming in, all day, everyday. One can expect in that case that digestive system is

No, it just means our body knows very well how to regulate less acidic stuff coming in, all day, everyday. One can expect in that case that digestive system is not perfectly balanced around ph of stomach in both directions, but rather overequipped for the most common case, and underequipped for the opposite.