Moving to OneNote for Windows 10 does nothing to change taht Ed Aldrich. If they are updating notebooks so sparingly then their notebooks should be in their personal (business) onedrive anyway.
They just need to make sure that machine is backed up periodically somehow as you cannot back up the notebook. Instead you'd be backing up the cache that is in the hidden App Data directory.
It is clear OneNote for Windows 10 is designed for connected people, and it wont' make everyone happy. You can read through the hundreds of replies - I am NOT one of the happy people. I hate the interface vs the OneNote 2016 interface. I call OneNote for WIn10 the Telletubbies version of OneNote.
But it doesn't really impact the particular scenario I responded to. I prefer honest information be out there. OneNote for win10 supports offline operation in that it caches locally waiting for you to connect again. It can be next week, next month, or next year. It doesn't care. You just cannot create a personal .ONE file and stick it on your desktop and never sync with the cloud. That is what isn't supported. That doesn't equate to working remotely in a non-internet connected village somewhere.