Large population centers are broken into several precincts. Voting shouldn’t take any longer unless you’re dealing with incompetence and/or corruption. Florida fired their incompetent workers and had all of their votes counted in short order.
Primary votes tend to consistently amount to about half of general, incumbents notwithstanding.
This democrat loser duo somehow managed to exceed that doubling by record amounts. Beyond suspect. Honest people acknowledge that.
Mail in ballots are processed at central locations in each county, which is where these vote updates were coming from. That's why we had places like the the State Farm Arena in Atlanta being host to dozens of workers. They were not processed on a precinct by precinct basis, at least not in the states that are being discussed.
It's not incompetence, but they're limited by the law. The law in these states prevents the workers from opening ballots and processing them before the election. Florida made some good changes to their law after 2000 which is why their vote was counted quickly. Florida was allowed to count absentee and mail in ballots before the election. These late reporting states could not by law, in many places because the Republican legislatures refused to change the law despite pleas from officials that this was going to happen.
Had Republican legislatures changed the laws as requested, the votes would have been counted in short order. So in a way you're right, it was incompetence. But it was Republican incompetence that lead to this.