If you are correct - and who am I to doubt you? :-) - then this should be a done deal.
I was wrong.
Georgia has apparently accepted that a federal consent order overrides the applicable section of Georgia statute 21-2-501.
https://election.princeton.edu/2020/11/07/north-carolina-and-georgia-youre-not-done-yet/
Consent order:
New voter registration by 12/7 will be accepted.
Wow.