First, I've flown out of BOS a few times in the past year or so and have never seen anyone being asked any questions by anyone. One can print their boarding pass online or with a kiosk and get to the gate without saying a word. So, as far as I can tell, there's no behavioral profiling going on there.
Second, I don't see these kinds of interviews as being realistic. People already complain about long lines and the TSA being too large and expensive. Imagine what the lines and TSA budget would be like if they gave everyone a 1 - 10 minute interview at the checkpoint, and imagine how many more agents would be necessary. Just doesn't seem like it's something that we could actually enact - regardless of how effective it would be.