Slappy,
Nod nod and you are right, but when someone doesn't qualify their statement then I have no clue if they are parroting what they have heard, or are referring to the types of extremes as in your examples. Therefore, so that we don't get into a long-winded discussion about pH that takes away from the purpose of this thread, I figured the best course of action would be to point them in the direction of that article.
If they have more questions or want to argue the point, perhaps they can start their own thread.
Roan