Yes, self declared without any steps to verify whether the box was incorrectly checked or if that status had since changed.
One group found that out of 20 randomly selected records expunged by the state, 18 were US citizens who were being stripped of their right to vote, with no remedy, which is why such efforts were, before the Trump-corrupted Supreme Court made it otherwise, illegal in the 90 days preceding an election.
As to Fulton County, you're believing dumb shit again - there were no illegal drop boxes over the weekend, the county legally kept it's offices open to accept -mail in ballots- which would not have arrived through the USPS, and which can legally be accepted until election day, so are not considered a form of early voting.
That's of course exactly what the court found when they dismissed the Republican lawsuit attempting to disenfranchise legal voters.