I agree it would be ideal to return a static HTML file for direct requests. I'm working on adding that back in. But I think the /txt version of the site is still valuable. I tried to come up with a way to return it without requiring a separate URL, but short of doing magic on the server (such as detecting user agent) couldn't think of a way to do it without having nasty HTML in the result. Any suggestions?
EDIT: I updated it to HTML-redirect to /txt/feed for noscript users. Still not ideal if you're trying to find a specific post, but it includes instructions to help. I think it's a reasonable compromise.