I don't mind take home assignments per se, but it seems like there should be a reasonable "this should take this long" time boxing of the thing so people don't waste a ton of time. I've done take-home things a couple of times and they always had "this should take 12 hours" or whatever time amount.

The "simpler" solution part stood out to me though. Given that Kagi was putting little effort into the thing, I wonder if his verbosity/try-hardness might have been a turnoff? Afterall, part of the thing is determining if you want to work with a person, my impression reading his blog post was.. mildly turned off? There was just a bit of desperation to it (which might be from real factors!) but still. That sounds mean and I don't like saying it, that's just kind of the vibe that hit me.