There's no denying that some artists resort to these anticts but being anti-gay is cultural norm within caribbean due to heavy influence of conservative church - it is not limited to the rastafari movement only.
I wasn't really a Bad Brains fan. One summer my friend ended up in charge of some the kids and their friends. I never noticed any if that energy. We never had any deep conversations but it was a comfortable environment. I have felt more threatened around southern baptists or born agains.