Not only does it tell me that they actually read my code and spot errors (the added bug safety net makes it much less stressful for me to write new code), but it also makes me feel like I'm learning something new that I wouldn't otherwise have. Finally, it inadvertently means that the rest of my code passed their “high” standards for quality, which is gratifying - especially for large commits in which I only need to change little.
I guess the key difference between my experience and this article, though, is that the article seems to be mostly focused in a non-technical boss commenting on benign/arbitrary opinions (like shades of color), rather than a technically skilled superior commenting on his area of expertise. That might explain why I have such a 180° reversal from this article's stance.