Well, that is sort of their job, right? They keep undesireables out, to keep us safe, while still trying to be as free and liberal as they can with allowing others.
In perspective:
Say, you're an immigration officer now. And you are presented a case where a young family (Woman, Canadian; Man, some other place) where there was evidence that the man just wanted a "Green" card. Let's say it was a MoC. Let's say, on the surface, it appeared that they were legit. But you had a suspicion. What would you do? Probably invest the time to check it out to make sure that it wasn't a MoC, right? 'Cause that's what the Canadian population pays you to do.
I am not siding with anyone here. I am just trying to ground the train here. Because, there seems to be a totally distorted expectation -- either that, or I have somehow slipped into some alternate reality -- the jury is still out on that..