“Oh the incorrect information was published, here’s the correct info”. Again, the map is not the territory.
And again, your "attack" relies on the evil maid saying "just trust me bro" and people taking her word on that. The "incorrect information" is provably published before the supposed "correct information" was.
The whole point of building this stuff into the camera is so that the timestamp can be published immediately. Snap the photo and within seconds the timestamp is out there. If the photographer doesn't have that enabled then he's not actually using the system as designed, so he shouldn't be surprised if it doesn't work right. If he uses it as designed then it will work.
The one thing that publishing like this does is prove that someone knew something at that time. You can’t prove that only that person knew something.
So? That's not the goal here.