There does exist some purpose for corp-speak: it is a shared language for people in disparate parts of a large organization to communicate with. It is a tool, mostly for managers.

Managers use it with peers because their job is coordination and communication.

Managers shouldn’t talk to their reports in corp-speak, but think of it like a shared protocol for all messages in the corporate message bus.

But how much of that is real as in has measurable positive impact vs random decision making.

Agreed, I think it also acts as a hiring filter to scan for candidates that have been exposed to this kind of language and can speak it fluently. The bigger the cooperation, the more widespread that is though, don't see it as often in mid sized companies. Was looking into a director role at a large org and there were lots of very new words thrown at me very quickly.

You may be right but often I feel it’s a tool to sound confident while at the same time having no idea what they are doing.