As the author of the box I’m happy to discuss any questions you have about realism @VoltK
If anything the root is the most unrealistic component, due to how Microsoft has changed the behavior in later releases of Windows, you are less likely to see this is many environments.
User is very realistic and something you see in real environments.
I accept that foothold is contrived to a certain extent, but if you gain a foothold on such a device, even the names might be insightful, in terms of company-specific language/vocabulary