The concept of a "Brag Document" to showcase your design thinking and process is brilliant. The breakdown of the challenges and solutions for table design on small screens is clear and actionable.
I particularly liked the emphasis on progressive enhancement and prioritizing the most important information. The "swipe to reveal" pattern for larger datasets is a great space-saving technique.
I'd be interested to see if the author has any thoughts on handling even smaller screen sizes like smartwatches. Overall, a must-read for any mobile UX designer!