The only reason for a big mail-in election is a historic exploit of an availability vulnerability of our in-person voting system, that it depends on lots and lots of (in practice, mostly older) people willing to spend a day in close contact with each other and other people for almost no pay.
> And the president is - right now - conducting a denial of service attack on it.
Or at least miming one, perhaps to provide political cover for Republican-governed swing state legislatures, seeing the problems of in-person voting in the pandemic and armed with the telegraphed disruption of vote by mail as cover and polling data as motivation, to simply exercise their prerogative to cancel public voting and assign a set of Presidential electors without it, which the Republican control of the Senate can guarantee withstand any challenge in the electoral vote count.
If he really wanted electoral chaos by disrupting vote-by-mail, there'd by no reason to telegraph it; the reason to telegraph it is because he desires a response that it either provokes or justifies, as much, more than, or perhaps even instead of the disruption itself.
> And the president is - right now - conducting a denial of service attack on it.
Or at least miming one, perhaps to provide political cover for Republican-governed swing state legislatures, seeing the problems of in-person voting in the pandemic and armed with the telegraphed disruption of vote by mail as cover and polling data as motivation, to simply exercise their prerogative to cancel public voting and assign a set of Presidential electors without it, which the Republican control of the Senate can guarantee withstand any challenge in the electoral vote count.
If he really wanted electoral chaos by disrupting vote-by-mail, there'd by no reason to telegraph it; the reason to telegraph it is because he desires a response that it either provokes or justifies, as much, more than, or perhaps even instead of the disruption itself.