If Satoshi were not dead (or, alternately, if Satoshi was not a front for the CIA/NSA/etc.), then they obviously they would have revealed themselves 10+ years ago.
I don't think that's the best line of thought. Of course, it might be the most likely one. If Satoshi was not a three-letter agency, he doesn't necessarily need to be dead.
If that's not the case, a suicide is highly probable in the event of losing the keys, for instance.
Yes, I agree. But we're just throwing out theories here with as much information as HBO had .