I think he's saying that people have no respect for music any more and just say crap about what they don't like. When he says that they're voices claw at his ears all day, it seems like people are saying harsh things to hurt them. When he says "I, I can see right through you... Go take your opinion with you Cause I dont want to hear it Go take your decision with you Cause I dont need to hear them " he might be saying that he doesn't care what they have to say because it only matters to them and doesn't hurt him anymore. He's saying that this is who he is, this is what he does and he doesn't care if they don't like it.
I think he's saying that people have no respect for music any more and just say crap about what they don't like. When he says that they're voices claw at his ears all day, it seems like people are saying harsh things to hurt them. When he says "I, I can see right through you... Go take your opinion with you Cause I dont want to hear it Go take your decision with you Cause I dont need to hear them " he might be saying that he doesn't care what they have to say because it only matters to them and doesn't hurt him anymore. He's saying that this is who he is, this is what he does and he doesn't care if they don't like it.