But the problem is that he even admits it himself that they've used it too many times. And they pushed the idea during CC that these relationships that they had separate from one another during this year and somehow changed them for the better and that they are more upfront with each other.

Also, this is the 8th season--don't these guys ever get to learn any lessons? If they want us to think that these guys are not the same guys they were back when John Winchester was around, then maybe they shouldn't fall back on analysis like this just to justify the fact that they are lazy and can't thing of any other way to create tension besides "they lie to each other"