You are right. The author is assuming the premise that all mail in ballots go to some central location, get shuffled together and thus should have a uniform co

You are right. The author is assuming the premise that all mail in ballots go to some central location, get shuffled together and thus should have a uniform count. The mail in ballots actually go to local precincts which count them and report them at different times. In fact there were times where mail-in ballots and in-person provisional ballots were being dumped at the same time because different precincts were at different stages of processing ballots at a given time. This analysis makes no sense and shows nothing unusual.