The complaints in this thread are mostly things like spacing and broken layouts, not fancy web X.0 fads. Hacker News is stylistically simple, but they still pay attention to making the content readable without strain.
I disagree with the HN comment. I always look at it at 140% zoom on my desktop, I had to add some CSS rules using Stylish to make it look a bit more eye-appealing to me (nothing fancy, I just prefer reading on a dark background), nested comments are a beautiful thing for a discussion, but they're a mess when you're on a smartphone that nobody figured out how to adjust properly...
There recently was a site update that improved functionality on mobile devices. Weirdly though there were a couple of regressions at the same time:
1) The front page for logged in users changed to a less useful one-column layout, so now I always browse the site not logged in.
2) Previously the current and previous weekly editions were nicely visible in the sidebar. That isn't there any more. As a result I read much less of the actual articles, as they just don't catch my eye. I mostly just check the front page news column now.
Anyway, I hope all the best for LWN, as the content is of very high quality indeed.