I didn't say it didn't support network accounts, but you have to have a local account set up to sign into those network accounts. You can set up your computer fully without being connected to the internet and it won't give you grief about it.
you have to have a local account set up to sign into those network accounts.
I'm pretty sure that's false. You can create an account right from OS install that is backed by something like LDAP (assuming you don't count the root user as an "Account")