Have I been on different airlines than these people who fight? In my experience airline seat backs pivot at a point somewhere around knee height, so reclining a seat doesn't affect legroom at all. When the person in front of me reclines it tilts my laptop monitor a little but that's it.
It has to me--I have long femurs and the tight seats are already bad enough. When someone reclines, I am that much worse off. I usually sit in a "V" as much as possible or get an aisle seat so that one leg can stretch into the aisle sometimes.
Honestly, I'm pretty much done with flying until such time as airlines come to grips with their management problems.