Yes I understand that, but I hope you agree with me that I had to confess and repent of those sins. I was backslidden. Some even say that still then you're saved. If you hate your brother you're in darkness. I was in darkness and living in sin after 20 years of really being saved.
You see, no one is against overcoming sin in our lives... only our victory is found in Jesus. The way we overcome sin is found in our identity in Christ, and because of that identity given by God sin doesn't have dominion over us. This is a truth we need to renew our minds to.
So if you have sin should it be repented of? Absolutely. Only such repentance is in acknowledgement that you are the righteousness of God in Christ. You must renew your mind in order to have victory over sin. Such sin is contradictory to who you are in Christ (righteous) and so sinning isn't in alignment with your identity that breaks sins dominion. Meditate on these truths and allow them to transform your conduct.
No one is promoting, endorsing or excusing sin. It has been dealt with at the cross (we are forgiven) and in Christ and by His grace it doesn't dominate our lives. So if a sin is a stronghold in your life, renew your mind to who God says that you are. Not by sight but faith and in doing so that which had its grip on you is loosened.