That's what the changes in 2002 did in terms of saying that it is possible to have both intents, but it is not given to every applicant to benefit from the discretion that arises. They will still want to know that the person will leave Canada at one point if the person has to.
The way I understand the test is that if you have indicated an intent to be permanent in Canada, you also have to convince the officer that if your application were to be refused, you would leave Canada. That's when they look at things like ties to their home countries and ask why the person would leave, because if the person were to be refused, they don't think the person would leave. It's in those situations that you would see those refusals.