Actually, I did. The question became what other source could give me up-to-date information. For example, if I print out something off the AWC leaving home, then go and prep the airplane, as much as an hour has elapsed. Weather can change dramatically in an hour, as can forecasts Now, lets say I prang the airplane bad enough to have to explain myself. I went on an hour-old printout instead of getting updated weather information. That to me suggests I did not have all the information relevant to the flight.
The CFI's who suggested this knew me and my situation. Were I to go from another source I would want a printout in the airplane, so I could prove that I had all the information relevant to the flight. Had I an internet connection in the hangar and a computer and printer, I might go that route. On the other hand, my $20 cell phone is enough to get a briefing that satisfies the regulatory requirement, doesn't require paper or toner, and works anywhere.