Opinion: The tenor trombone having become the dominant trombone is regression to the mean. The bass trombone and alto trombone are both better sounding instruments, but because the tenor covers most of their ranges with an in-between timbre, it became the norm, while bass and alto became more rare.

This is from a post by the official LA 2028 Olympics Instagram account, and is a textbook case of why the Oxford comma matters!

This is literally an announcement of a change from “speed, boulder and lead” to “speed, boulder, and lead”.

Their omission of the Oxford comma just makes it confusing.