I don’t think people’s codes are typically that easy to crack
Cheese pizza is a common euphemism for child pornography online, which I believe originated from 4chan? Not sure on that part, but it's definitely a common slang for it. Now whether that's how they were using it in the emails or not, I have no idea, as I didn't look into the emails. I stopped digging into conspiracy theories around the time the whole Assange "proof-of-life" fiasco was frothing about. I've got better things I can be doing with my time.
according to 4chan, years ago
that a government official is using *chan lingo is a stretch, and lends credence to Bannon's point about trying to appeal to the 4chan demographic aka disaffected male youth, who would get the "cp" connection.
What kind of fucking creep sees “cheese pizza” and immediately thinks of child porn? I’m fairly well convinced that the real conspiracy here is that the whole lot of you pizza-gaters are just projecting.