There's just no thought process going on with the children of the magenta line is there.
SOPs and procedures are always a good place to start, but they cannot cover every eventuality. Sometimes experience,knowledge and skill (we used to call that sum total "airmanship"), may lead you to take another course of action.
I wasn't on that flight deck, and i suspect nobody else here was either. They may have had some indication, like a multiple heavy birdstrike, that their return to earth was going to be more immediate.
Did the crew of the swissair follow sops,yes, and it killed everyone.
Did Sully follow sop and the checklist blindly, no, they used knowledge, experience and skill to save the day.
Think about it, one day you may become a pilot, not a machine operator.