Shouldn't Cronometer count hydration from all beverages, not just manually added water?

I noticed that Cronometer only includes water added through the 'Add Glass of Water' feature in daily water intake. However, many beverages (such as soda, juice, coffee, etc.) are mostly water and still contribute to hydration. For example, if a drink contains 90% water, shouldn't 100 ml of that beverage contribute approximately 90 ml toward daily water intake?