>
I can't help thinking that Scott Alexander has no clue what he's talking about, or more more benevolently, is writing quasi-poetic nonsense. Which is bad for someone with that many followers.Note how you haven't pointed to a single thing that's bad with his post, but nonetheless managed to sling several condescending accusations (has no clue, quasi-poetic, nonsense) at him...
And all that for a point where he doesn't even pretend to give any specific explanation or causual relationship or anything, just wants recap with a description of the outward appeareance of the phenomenon, precisely to show that we have no clue about it yet:
"It looks like sleep is somehow renewing these people's depressions. As if depression is caused by some injury during sleep, heals part of the way during an average day (or all the way during an extra-long day of sleep deprivation) and then the same injury gets re-inflicted during sleep the next night".
In TFA this is not an explanation of what happens, but an "it looks as if somehow" to highlight exactly the current lack of an explanation, an explicitly presented as such.