There are people using HFS both in LAN and over the Internet.
But the problem is: HFS starts in a default mode. Until the user change the mode, should the warning appear?
If you use both in LAN and Internet, the online mode applies - it doesn't exclude LAN usage but offers the full online options.
The
LAN only mode should disable all options exclusive for Internet usage and suppress the connection warnings.
@Jack_2000
From what I've read, you can build a LAN with APIPA, it's just not usable with routers.
As for the 'noob' mode, ask yourself, would the power user not like to be informed if his/her connection broke? I agree with you tough, the user should have a choice to end the nagging.