Here's why:
* "Pygmy" refers to a group of people of short stature: This term is often used to describe ethnic groups in Africa and Asia. It's not typically used in a political context to describe someone's leadership style.
* "Tyrant" is a well-established term: It describes a ruler who exercises absolute power in a cruel and oppressive way.
If someone were to use the phrase "pygmy tyrant," it might be intended as a metaphor or a derogatory term, but it wouldn't be a formal or widely recognized political designation.
When talking about oppressive leaders, it's better to use more established terms like:
* Dictator
* Authoritarian
* Despot
* Totalitarian
These terms are more precise and accurately convey the nature of the leader's rule.