You must not have read what you quoted, because I only talk about the freedom to:
a) obtain the code
b) modify the code
The only stipulation I mention is that this is guaranteed to everyone. Closing the source of the program obviously removes my freedom to modify the code you produced doesn't it? You remind me of people that say things like, "America is a free country. I can do whatever I want." Yes, America is a free country, and no, you cannot do whatever you want. The GPL guarantees everyone certain freedoms, but no, you can't do whatever you want with it.