I bet there’s a decent chance that Ubi fixed the bug that caused Tom’s quest misfire, they just didn’t do the totally separate fix that checks to see if you’re in the broken state and repairs your data so you can continue. Those are two totally separate issues, technically speaking.
It’s like St. Peter saying, “We accidentally had cheating at backgammon on the list of mortal sins. But we changed the rules, so now no one who approaches the heavenly gates will be condemned to hell for cheating at backgammon.” Meanwhile Tom (notorious backgammon cheater?) is still sitting in hell, burning forever.
(It’s also possible that the patch had several days of testing to go through, so even a bug found several days before the patch went live isn’t included in that patch, but is fixed and due to be included in the next one. No silly analogy about hellfire for this scenario.)