All sections apply. It's just that the original comment misunderstood what section 6 says. This is the only way to read section 6 coherently with section 4 and the rest of the license.
Sure, it's an interpretation.
[edit] the point is: nowhere as clear as the original comment expresses.
You have yet to point out any misunderstanding or why this is wrong past saying "that makes the license crappy in some ways". Which may in fact, be true.
But this is a policy argument, not a legal one, and it will absolutely never win in court over very clear and unambiguous text.
