The third point is especially bad for this article, where in context, the assumption should be that 0xxxx is octal, which isn't what he's actually doing at all.
So the upshot is that, rather than efficiently communicate what he's trying to say on this topic, he'd rather grind is axe on an unrelated topic. His choice, I guess, but I think it's a bad one. And an unfortunate one - he's got really good information on this topic, and his choice has hijacked us into talking about his date format.
And, thinking about it, it's not really the "long now". It's more like the "medium now". If it were the long now, he'd have several more zeroes in front.