Election mail is supposed to be handled locally, especially when it gets closer to the election. We separate the ballots and bypass the sorting facilities and bring them to the local town hall/voting location. This was the usual process for the last 2 offices and presidential elections I worked through for this very reason, especially when DeJoy shut down sorting machines.
The delays are still a concern for many reasons, but as long as local post offices handle ballot delivery locally it would help minimize late ballots.
That being said, what do I know? I’m just a lowly cog in the machine.