I’m going to cite “worse is better” in disagreeing completely with the author. CSV has won because it’s easy to generate, easy to read as a human, easy to parse with standard tools (when generated correctly), and really the last point is the salient one.

The format isn’t inherently flawed, though much like other less than perfect standards (I’m looking at you SMTP), the implementations frequently are.

And also, much like the author, I’ve been “professionally” dealing with data in all (most?) its forms for the length of my career (~25 years).