No because then it would not be an Atom feed. Atom is a syndication format, the successor to RSS. I must provide users with a link to a valid Atom XML document, and I want them to see a web page when this link is clicked.

This is why so many people find this objectionable. If you want to have a basic blog, you need some HTML docments and and RSS/Atom feed. The technologies required to do this are HTML for the documents and XSLT to format the feed. Google is now removing one of those technologies, which makes it essentially impossible to serve a truly static website.