*Shrugs* I think the comparison was just so inappropriate that I felt it had to be sarcasm, so I interpreted in the opposite manner.
If he's saying 'there's no point in locking up guns because his children will definitely get them, so why try?' seriously, then we have some moral dissonance going on. I seriously don't agree that we shouldn't even -try- to keep guns away from children. Obviously, no one feels that way.
If he's saying this -ironically-, then he obviously thinks guns -should- be locked up, and he's comparing it to information... so he's implying that people -should- try to lock up dictionaries for the children's safety or whatever.
I considered both meanings and they're both terrible. Guns =/= Information, the magnitude of the metaphor really invalidates whatever he was trying to say.