Obviously, the best way to make code self-documenting is to wrap logic in a method whose name clearly describes its intended function. For one-liners however this can lead to overabstraction, and leaving a "what" comment can be entirely appropriate if the engineer decides it is. This cult-like behavior of engineers who think that well-commented code is some sign of weakness or unprofessionalism is beyond silly.
Absolutisms are a sign of a bad engineer, but I can give you the benefit of the doubt and not assume you're a bad engineer just because you employ such absolutist statements and use erroneously use them to judge code by oversimplified metrics instead of relying on deeper analysis.