At first, I was annoyed because I knew this was going to be the same foolish logic of "It is more free because I am free from worry with it! See, I can use the word free too!" logic that makes me repost that lovely quote from George Orwell's Politics and the English Language about words having contradicting meanings and people arguing over them pointlessly. Then I RTFA and found out it was written by an 8th Grader. Whew, I feel better now. If other people making this argument would realize they were using 8th grade logic as well, I'd feel a lot better about this. Every time I see an adult making an argument stemming from poor understanding of the fact that words have multiple meanings, I want to bonk them over the head with a dictionary while shouting "see definiton (2)!" It is..a pet peeve of mine.
irrelevant aside over
This is still a terrible argument, because it ignores what the people complaining about the iPad being not open is all about. It has nothing to do with it being open meaning accessible, free meaning with a lack of worry, or any similar semantic strawmen. It has to do with the fact that you cannot put any application you want on an iOS device without Apple's permission. Jailbreaking is not an excuse, and neither is the "you just have to pay $100 a year and join a developer program". Users should be able to install what they want, when they want, without asking anyone's permission. You should own the hardware you purchase. Apple disagrees, and thus iOS devices are not free and open in the sense of being able to do with them as you please.