Why not a mandatory setup question before first use?
What is the point of that? The answer would have to be hard coded. These things have to work on a private LAN (preferably air gapped) with no capability to contact certificate authorities or reference time servers etc.
As for the "real computers/OSs" bit, as I recall this system uses a MIPs SoM running Linux (a bit like a Raspberry Pi but slower, no GFX, less memory and more UARTs). Comparing it to a "real computer" is invalid. It is more like a high end washing machine in computing capability terms.