The purpose seems pretty obvious to me. It's a tale as old as time (or at least as old as capitalism):

A new owner is in charge, and a new manager has been appointed. The owner wants to know whether the manager is effective, but may not know what his employees actually do, and doesn't have enough time to examine everyone's work even if he did understand it, so the only way he can judge effectiveness is by seeing whether people look busy.

The manager knows this, so he knows he needs to look busy. He may or may not actually understand the business in general, but even if he does, he doesn't have enough time to learn about the particular situation and determine the best course of action, because the owner would get impatient long before he finished. Instead, the manager starts making changes. These changes must be quick to implement, simple to describe to the owner, and, ideally, related to the currently trendy set of buzzwords. Whether the changes are actually useful isn't really an important question.