What I understood the authors point to be was not that missing sleep is no big deal, but that focussing on it being a big deal amplifies the insomnia itself, while being relaxed about the need for sleep allows you to sleep more easily.

Yep fully got that. Big catch 22 though, as you're only likely to read said article if suffering from bad sleep.

(And: My thoughts were more like, if you don't read HN, then that's whole lot easier.)

The mind is a bitch.