I agree with the problem, but disagree with the solution. When I come across an interesting blog post, I also want an obvious way to the blog's homepage to see more posts. It would be equally frustrating if I want to see more posts, and instead end up on some landing page.
While designing my startup's blog[1], I looked at a lot of other startups' blogs and noticed that most of them had the same problem the author describes. My solution was to just put a 2 line description of what we do with a link in the blog header, so it is very easy to get to either location.