How about wiping out an entire civilization? Not even necessary to hide this thought in your diary if you have enough power. I've seen today - in fact any day of this year - much worse things than his diary thoughts.

Even if you think this this is what OpenAI is doing, they surely don't think that. So why would he write that in his diary?

Well, gee. When you put it like that, Hitler existed, so really we can't fault anybody for anything short of orchestrating the genocide of 12 million people.