Did anyone read the article?
There are at least half a dozen comments above along the lines of "Why are OO devs being so lazy/pig-headed and refusing the fix the bug?".
Read the fecking article will you? It isn't a bug. It is meant to work that way. You may or may not agree with how it works but that's an entirely different matter. If the software is designed to work one way and that is how it works then it doesn't need fixing!
The spec might need changing but then you've (potentially) got a lot of people who ARE expecting their hidden data to be removed who are going to be really pissed off. I must admit, it's annoyed my both ways, depending on my mindset at the time. Sometimes I'm expecting it to remove everything and that's great. Other times it's caught me out. Same goes for Excel.
But please read the damn article before mouthing off about how stupid/lazy/inferior-to-you other people are.