This issue has always been about time. It doesn't matter how clean the code is, it can still get complex. If it takes someone less time to read your comment tha

This issue has always been about time. It doesn't matter how clean the code is, it can still get complex. If it takes someone less time to read your comment than to read code and finally know what the function does, this is a situation where a comment is valuable. Just do it and stop the philosophical debate when productivity is the issue.