I'm sad to report that in the past few years, ever since uncertainty became our insistent 21st century companion, leadership has taken a great leap backwards to the familiar territory of command and control.

Summary

This quote suggests that in recent years, there has been a regression in leadership styles, with a shift towards a more traditional approach of "command and control". The mention of uncertainty as a prevailing characteristic of the 21st century implies that leaders may resort to familiar, authoritative methods of leading in order to assert control and manage uncertainty. This shift is seen as a step backward from the progress made in adopting more inclusive and collaborative leadership styles.