Where there really coins they didn't get? Source? (Not to dispute the claim, just interested)

About it being half the point: Perhaps not stated explicitly, but he knew what he was doing by not baking in a government back door. From the whitepaper: "any two willing parties to transact directly with each other"

I'm probably not getting the joke, but are there people who memorize their secret keys? I've never looked to see how long they are but I assume that's quite a feat.