There are many reasons that people would use a particular schedule. Congestion is only one, and not even a big one usually.

A far bigger reason is to be done with it so they can get on with their day, whatever that might be. That way the errand(s) are done and won’t interrupt them or weigh on their minds.

FWIW, Office (or more accurately, everything that was part of Office) was renamed Microsoft 365 years ago, in 2020. That was long before the AI insanity.

You’re asking the wrong question. You should be asking “who is trying to use Windows without any Internet access at all?”

Which is definitely some people/situations. It’s not the standard user-centric use case that Microsoft expects, but it does exist.