I concur. Mine produced a sound that was a cross between a honking goose and a screeching crow. Loudly. They were also neither tame nor docile. They bullied the other 11 chickens and eventually I sold them as I was getting tired of the noise and the bullying. I know that the common wisdom is that they are docile, maybe I just got a bad lot.
I have come to conclude that a chicken's temperament is much more determined by individual traits than breed. So: it is basically a crapshoot and you can't plan for tameness by selecting certain breeds. I know people who's leghorns are lapchickens, while they are described as flighty. Go figure.
My Brahmas are very docile--I only have Brahmas. Things may be different if one also has smaller breeds. My Brahmas are not quiet. The cocks crow quite a bit, both on their own and in conversation with two other flocks that are somewhere in the neighborhood. All of them vocalize a good deal beyond that, but loudness is usually reserved for the crowing.
I have a cute 5 week old light brahma and she's already a bit bossy (who am I kidding I'm new... so perhaps I'm reading it wrong). I'm hoping that shaking it up by adding a third to the duo will improve things.
I have no experience with brahmas. But everything I have learned and witness says if they don't grow up together they won't get along. At least that has been my experience with the aggressive road island reds . I have three of them with 4 Barred rock or Plymouth Rock. They all get along but this is my new batch and they all have been together since birth. Everyone I talked too that adds hens says it doesn't work?