Interesting; this was the position they had us all adopt.
They also moved the "old"* people in the exit rows and asked a couple of us young men to take their places. Back then there was no pre-questioning to see if you're willing and able to open the exit windows. Interestingly, they gave us special instruction which was: "Don't open the window unless I [flight attendant] am disabled. I might not be opening it for a reason."
* probably around the age I am now, or younger, and I don't feel old. But I am a lot fitter today than people my age tended to be 30 years ago.