I dunno, what I took from his post is that you have to sign in to Steam with a connection, and then go into offline mode, and if you then close Steam you'll need a connection again.
That's not the case. As long as your account credentials are stored on your PC, you can pretty much go into offline mode any time your connection is down. It'll just pop up a notification stating that it could not connect to Steam, and ask if you would like to try again or launch in offline mode. I've been doing it the last two weeks, and I don't have a connection on my PC.
