Are linguists and polyglots mutually exclusive?
Not necessarily. Because of their interest in languages, many linguists happen to be polyglots too. But all linguists are not necessarily polyglots; many are monolingual. Polyglots may be multilingual either because they were raised in a multilingual or multicultural environment, or because of a conscious decision to learn more languages. But all polyglots are not necessarily linguists. Many people from Europe, Africa and the Indian subcontinent are polyglots, given their diverse culture and history of colonization.