Big (O)Notation Every Developer Should Know

There are some reasons you hire developers with Computer Science degrees.

Been a dev for over 30 years, never used any of this stuff. Projects fail to ship for many reasons, but its never this.

Am I missing something about the O(logN) section? Why is there a graph of O(n^3 logN) under the text Here is how logarithmic complexity look like?

Are these terms actually used in daily conversation? Or are they reserved for deep-nerd type discussions?