This is amazing, how can something that is so easy confuse people to the point that one guy wants to throw it in the trash. I washed my bike today, it took less than 3 seconds (watched my clock) to remove the backrest from the lower mounting hole. No vise grips or channel locks, no removing the seat to gain access.
Look at the bracket and the backrest while you have the seat off, try it a few times without the seat in your way. This is too easy to cause this much grief.
I can't ride over a hundred miles without one due to the two back surgeries. As mentioned above been using one for 16 years and never had a problem getting it out, or in.
I agree to an extent. I have never had a problem removing, installing or adjusting my backrest and have never read that section of the manual. I don't see the big deal. How ever I am extremely grateful that others don't take that stance when helping me with a problem that probably seems very simple to them.