The original "agile" is a reaction to the overly rigid planning and emphasizes worker self-management. It makes sense since the people who are closest to the work (the workers) know best how to plan and implement the work.

It immediately breaks down when a specialized management tier emerges and tries to push their own agenda, i.e. to sell themselves rather than do something meaningful.

At this point, whichever form is used doesn't matter. The management, endowed with the power from above, will exploit the weakness of any agile-shmagile methodology to push their own agenda.