Earlier quoted context omitted.
It's not really a rant about sleep habits. It's a rant about excuses and not meeting commitments.
I don't think so. It's a rant about people who don't want to do hard things. Go reread — the overall thrust is not "keep your promises," but rather "do hard things and don't complain about them." He says this pretty explicitly several times.
Alan: My arbitrary function equality checker is taking a goddamn long time to write.
Barbara: That's because it's mathematically impossible.
Alan: Oh, thanks. I guess I won't put that feature in, then.