Roscoe Orman (Gordon since 1973) was also in the movie Big Willie Dynamite (a 1970's blaxploitation film along the same lines as Shaft, Superfly, etc.) and he had quite a bit of vulgar dialogue.
To some impressionable children, it might be quite shocking to see Luis curse.
It was the same feeling I got around 1976, seeing John Travolta, who I knew primarily as Vinnie Barbarino on Welcome Back, Kotter, being featured in Carrie
with Sissy Spacek, and his character did quite a bit of cussing as well.
Someone you're used to seeing in a familiar role, playing a different caracter in a different context, could take a little getting used to when you're younger. But from an actor's point of view, most of them want to expand their repetoire and play different characters, even if it means running the risk of soiling their "clean" image. I think this helps an actor from being typecast as only one character.