” They must agree to assist other passengers and the attendants in an emergency requiring egress through the emergency door on the row(s) where they are seated.”
I have never seen nor been advised of that requirement.
A few months ago I was flying om small jet and had an aisle seat at the door. I had to agree to operate the door in a emergency. “No, problem, dear, I was in the Army Airborne so I know to quickly get people out of airplanes!”, I exclaimed.
True Story.
It is read in major professional airlines to all who are seated on exit door rows. The words are in the Federal code.
You never sat on an exit row. Pro passengers (business people) select the seating routinely, and incidentally often one has a pilot seated there dead heading to the destination or beyond.