The very next word after "anti-pattern" is if. "The following table definition that uses a timestamp-based primary key as the first key part is an anti-pattern

The very next word after "anti-pattern" is if. "The following table definition that uses a timestamp-based primary key as the first key part is an anti-pattern if the table will see a high rate of insertion:" Once your data gets big enough there's no easy one-size-fits-all. You gotta look at how you're going to be using the system.