That's just acidic, orange juice will do the same thing. But perhaps you are amazed people are willing to consume orange juice too!

Wait 'til you find out what water can do.

I do get your point, but really, it's just corrosive in a different way than the usual highly corrosive stuff we consume daily.

Also I'm not sure how the pH level of a food is relevant to anything

Chemistry is scary to those who don’t understand it because it gets used for this type of sophistry.