I am not an expert in BDSM but it sounds to me like you really don't know what you are talking about. Abuse and manipulation are completely different things than being dominant in a relationship. It does not have to do with inexperienced partners. If he understands what is and isn't OK to do as a dominant in a relationship then it shouldn't matter if the partner is experienced or not. There are certain things that are unacceptable to do no matter what kind of relationship you are in.
I am not an expert in BDSM but it sounds to me like you really don't know what you are talking about. Abuse and manipulation are completely different things than being dominant in a relationship. It does not have to do with inexperienced partners. If he understands what is and isn't OK to do as a dominant in a relationship then it shouldn't matter if the partner is experienced or not. There are certain things that are unacceptable to do no matter what kind of relationship you are in.