They will if the other pilot is doing his or her job
You're defending the indefensible.
As I was bumping down the (hand flown, "through" the FD
) ILS last night I also thought of the incapacitation situation. If I was to become subtly incapacitated, it would become immediately obvious to my FO because the control column would stop moving or be not moving in accord with what was required, and well before any callable deviation occurred. On a "normal" approach, the control column is alway moving and is plainly visible to the other pilot. Not so a sidestick.