Trump admits he is undermining USPS to make it harder to vote by mail

As a strategy, it's hard to see how this benefits Trump, though. If he isn't re-elected, he gets ejected from the white house on jan 20. Walking through the various outcomes, it seems like any legal attempts to prevent mail-in ballots from being delivered and counted would be fast-tracked to the Supreme Court. The SC is unlikely to show any explicit favoritism for Trump and in general, the entire country is tired of his chaos engineering, so it would seem that almost certainly, the vast majority of ballots (both in person and by mail) will be counted.

IE, there really isn't a path for Trump to remain president; I have to conclude instead that his goal is maximum chaos. It's pretty clear that the institutions aren't going to be favorable at any attempts he makes at a permanent power grab.

One more thing- many people who vote for Trump will be using mail-in ballots. So his attempts to suppress counting could very well hurt him as well. none of this suggests that trump has some sort of "master strategy" to remain president if he doesn't win the electoral college.