Water damage indicators are known to not be perfect. That's unfortunate but true. It doesn't mean Apple is deliberately making them be bad in order to avoid warranty replacements though.
No, agreed. So in really humid weather, say, HK in the summer, the keyboard of the Pro breaks randomly if you do not care it in a watertight pouch and the indicators trigger. Not waterdamage as Apple means it to be and I have not had issues with replacements there but you wonder what the purpose of the indicators is then.