What is your opinion on the whole matter?
Jesus loves paradoxes.
Remember the answer that was given to the rich young ruler when he wanted to know what to do in order to inherit eternal life: he was told that he must obey all of the commandments and to sell his possessions and give all to the poor. And to the disciples who were perplexed it was told that all things are possible with God, and that all who believe on Christ will have eternal life.
So is that a contradiction? Did Jesus give a false answer? No and no. Both answers are correct: the requirement for eternal life is sinlessness and all those who truly believe will be made, through faith, to be sinless.
From the broad eternal perspective, the sinfulness of a believer is irrelevant: it will be erased, being thrown into the endless depths of the sea of God's righteousness. To say that there is ultimately no sin for the redeemed is correct in a sense if it is a recognition of the Gift of eternal life.
From the narrow, here-and-now perspective of each person, however, the wages of sin is still death, even for believers. God is able to keep us though, even if that means chastisement to the point of death to keep us from being condemned with the world.
So while I agree with what you're saying, what you're saying isn't always the correct answer. Obviously we shouldn't fool ourselves into thinking that because Christ died for our sins that we can therefore do any evil thing we wish, and even if that's not your modus operandi, someone somewhere could easily take that same message and twist it into exactly that.
For the wages of sin [is] death; but the gift of God [is] eternal life through Jesus Christ our Lord. -Rom 6:23
Both perspectives are correct, and I think it should be left at that.