I think the time a student spends here contributes to his or her Canadianness, and I'm disappointed in your answer, but thank you for clarifying.
On the issue of intent to reside, it seems to me the answer you gave means there's no purpose in having that provision in the bill at all. While the person is a permanent resident, they have the four out of six rule. After they become citizens, you say the intent may change. All these constitutional concerns people have are of no value if the intent may change and the law does not pertain, so why have that in the law at all?