Been here before my friend
The greek in that text has about it the fact they do not habitually live in sin. Like the unbeliever does.
The same author said if we claim (present tense, and he included himself) to be without sin we deceive ourselves. This is further emphasized by the fact he says he writes so we do not sin, but if we do….. and says if we do. We can actually come and confess our sin.
If you can NEVER sin again period. You would have no need to confess your sin, Not only to God (1 John 1: 9) but as James says…
James 5:16
Therefore
confess your sins to each other and pray for each other so that you may be healed. The prayer of a righteous person is powerful and effective.
Now why would both James and John, two people who knew christ personally, and helped start the church. Tell us as true children of God to confess our sins, to God and each other.
You want to decieve yourself and think you are sinless. I will not stop you. But if you think people are going to sit idly by while you try to tell others they must be perfect or they are not saved. Well then we have a problem