This idea likely stems from:
* Stereotypes: In fantasy and folklore, dwarfs are often portrayed with deep, gruff voices, contributing to the idea of a singular, shared vocal quality.
* Limited Representation: The voices of dwarfs in media are often limited by the actors chosen or the desired effect, perpetuating the misconception.
Remember, dwarfs, just like any other group of people, are individuals with unique voices and personalities.
Let's celebrate the diversity of voices in all fictional and real-world communities!