GetComputerName() question

[Martin Wilck]

Why is GetComputerName() an init function, or in other words, why is it
important that 
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\ComputerName\ComputerName
be set at registry initialization time (in _allocate_default_keys())?

I am asking because GetComputerName() IMO returns the wrong value (FQDN
rather than NETBIOS name). A real implementation of GetComputerName()
would look for the above value in the Registry and use gethostname()
only as a fallback, but currently it's the other way around - why ?

Martin