Do the IRC transcripts sound like he thought that this information should have been shared by the server? Your interpretation would have weev thinking that AT&T intended to make this information public, that having it public was fine, and there was no complexity in what he did to get it.
You're right - weev was being a dick, and he knew he ws at the time.
BUT…
I personally think AT&T should also be held to account for their part in what happened. They put all that data up on the public internet, with no authentication required to get it. I think they're at least as culpable here as weev is. (and I don't think _either_ of them should get off scott free - they both played fast and loose with other people's data.)