Of course, you don't make the change if you don't want to become the B2B mega secure backup business that patrick is pitching. But if you do want to grow into that then you have to re-brand into something a clueless supervisor is going to be able to authorize. That won't happen often with the current design.
If Colin doesn't want to make a big B2B business, which I'm sure we all believe to be true, then you can keep the old design and be happy. But if he wants to have a "real" business, then he should absolutely go with a standard bootstap theme.
edit: four to for. duh
"Customers like typical HNers might like Tarsnap the way it is, but Colin should instead market to [such and such businesses] using [lots of specific and actionable advice] because [lots of reasons explained in excruciating detail]".
HNers:
"Oh, I like Tarsnap the way it is."
Colin could spend one day and come up with something that didn't look super generic. My idea would be something dark and simple, like this: https://useiconic.com/
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.
And the redesign in the article looks like someone grabbed a free theme and swopped some text and a image.
Then he supplemented this with: " let’s hypothetically assume it isn’t in the budget. In that case, we go to Themeforest and buy any SaaS template which isn’t totally hideous."
So don't complain that it looks identical to 100 generic free wordpress themes -- that was Patrick's point, and his actual advice was exactly what you call for: spending a day to come up with something.
I am also curious because I believe most of the comments here on HN amount to not liking this article because it doesn't appeal to them as a customer without regard to what it means for Tarsnap as a business.