The blog post praises the Finder application on macOS for its thoughtful approach to text truncation and tooltip design. It highlights how Finder intelligently elides text and provides helpful tooltips, improving user experience compared to other applications that clutter interfaces with unnecessary information. The author expresses frustration with poorly designed tooltips that distract users and emphasizes the importance of creating stable interfaces. Overall, the post acknowledges Finder's clever design choices that enhance usability for power users.