If you do not loose your salvation even if you do not take your sin to Jesus to be forgiven, then you do not believe what scripture tells you. I think that believe is adding to what scripture tells us. It is like demon advise, for demons say if Christ tells us something is abiding then, the demons add, you are still saved even without forgiveness.You say
Christian can sin
But Christian must stop sin
So you agree every time Christian sin, must repent?
You say No genuine Christian believe this nonsense teaching
In my church people believe when you are christians, murder or what ever sin oN the list of Galatians 5 Will not make you lose your salvation , only lose your reward
Demons used the same trick with Jesus when they tempted Him in the wilderness.