The fact that the author just dismisses columnar indexes because he doesn't use them leads me to question his credibility as a serious critic of tools for typic

The fact that the author just dismisses columnar indexes because he doesn't use them leads me to question his credibility as a serious critic of tools for typical analytics workloads since columnar indexes make a huge difference in performance on many of those workloads. SQL Server has them built in and they're available as extensions for PostgreSQL.