I think one thing we might all agree upon is this:
Insufficient information to the pilots regarding the possibility of rudder induced structural breakup was NOT part of either the Airline training program or the Flight Manual. Both approved by the FAA.
We might also wish to include in future FAA ATP written examinations a question concerning rudder induced structural breakup.
There have been other crashes where information existed in one location but not in another.
I am reminded of an F28 crash due to ice/frost on wings in Canada, only to be followed by a crash at New York's LaGuardia airport of another F28 due to ice/frost on wings.
Sharing information in the civil sector is vital.