It's not just HNers, I would say that a lot of people who are involved with designing/building websites will tell you that this is not a great way to redesign the website (It's probably just a quick draft). I don't say the current design is great but it's better than the one he's proposing in my opinion.
And just by looking at his personal site he's probably not the first person to ask for advice on how to design your website. I'm not trying to offend the writer but there's a reason why there are web designers and UX people dedicated to the task.
I realise that this redesign is just a small unimportant part of all these suggestions (and I agree with some of them) but if he puts it out there it's worth giving feedback on.