It's in the 737 FCTM as well.
Yes, it is *now* but to quote from the official report:
An excerpt from the amendment introduced in the FCTM Boeing B737, issued after the present event, is shown below.
It may seem a bit nit-picky but it is easy to revisit past occurrences using contemporary knowledge and not what people had available to them at the time. Otherwise I agree with you.