It's about context fam.
Do you recall how the last season ended? With Brody lying to everybody, and then finally coming clean to his daughter with him to go on and blow up the CIA and 300 people. (allegedly of course) Then on top of that, the tape plays to further ether his family and their current living situation. Seeing the aftermath of that on his family was something a lot of people wanted to see, or thought about. Following Brody around when he's on the run would be dumb as fukk (last night's episode is a prime example).
You can't just bring Brody's ass back in every single episode after that shyt. It's just not plausible or important to the big picture of the story anymore. The focus is now on who set all that shyt up. It's partly the writers fault for this.
Unlike the majority, I feel like this season has been pretty good so far, and last night's episode was the weakest one yet.
There is far more entertainment in the shyt Quinn is about than seeing Brody not be able to do shyt with his current situation. I mean, what the hell is he going to do with the price on his head besides live in a hole somewhere avoiding being noticed?