> when any of that breaks, good luck!
The premise is that you don't need luck, you can call Oxide. As you said, they wrote all of it, so they own all the interaction so they can diagnose all of it.
When I call Dell with a problem between my OS filesystem and the bus and the hardware RAID, there's at least three vendors involved there so Dell doesn't actually employ anyone that knows all of it so they can't fix it.
Sure, Oxide now needs to deliver on that support promise but at least they are uniquely positioned to be able to do it.