Again, I have problems with his exegesis, but the point is still valid. We become complacent with sin, thinking that it will always rule in our lives. But scripture says the opposite! The Holy Spirit is more powerful than sin—but I doubt that any of us really believes that!
And, secret confession, we all love our own personal sin too much to really want to give it up. So, rather than be honest with ourselves, we change our theology to justify hanging on to it...
Only the Holy Spirit can make us come to see sin as the debilitating disease that it really is. Only the Holy Spirit can open our eyes and give us the desire to jettison what is really hurtful to us.