I'm an experienced Unix admin, and I actually wrote my own versions of these csv tools long ago instead of using coreutils. I had a lot of different datasets to with with, and it turned it there were so many inconsistencies in the CSV data that I needed a tool that could handle it all.

It also became super simple to extract and munge data with options for tabular data. With two tiny commands I can exclude rows, include rows, sed columns, merge tables, and export new tables, all with just csv files. So it's pretty handy.