The only thing I might change would be the lack of edit/delete in the comments section (every time I read comments on there somebody seems to be asking mods to delete a duplicate comment, etc). I can't really complain, at least they didn't use some heavy, potentially data-sucking third party comment platform like FB or Disqus. I assume it's some kind of WordPress plugin, but I haven't looked into it.
Seems the contrast is excellent and no obvious disturbing layout choices. Fairly traditional layout although I'm not a fan of the white on black as I sit in the sun a lot, but generally it seems quite good if you compare it with most random blogs out there.
It's a way of sending the message, "It's my site, not yours. I don't care if you don't find it legible. Everybody else is wrong, and I'm right."
I remember not being happy but that's no longer the case for me... but I also don't read it regularly.
What I'd miss most is if the hackaday.io project site were to go away. Makes documenting my projects very easy.