The author uses unfortunate wording. His claim is that requiring full applications as a part of the interview process is unnecessary. He does not claim coding itself should not be a part of the process.
He makes clear he's talking about full, to spec applications in the introduction, but he calls these "coding tests." His conclusion makes it clear he does not consider "coding tests" to be the fizzbuzz sort of questions:
For those who administer coding tests, please reconsider what you’re doing. For junior developers, they’re fabulous tools. But for anyone who has a body of code samples all ready to go, ask for one. Ask a few technical questions that require code in an interview.