A
No, if a Christian sees another Christian brother or sister sinning, they have every right to rebuke them. Most churches haven't got the courage to rebuke people. They say it's being judgmental, so instead they keep silent.
There are plenty of scriptures that tell us how and when. Remember Jesus saw sin all the time
yet in most cases it says "He held His peace"
People that talk like your talking scare me. They usually end up causing alot of problems, hurt alot of people
and when they get alienated they walk away saying its because they serve God and thats why they are not liked.
Then the more they are alienated and the more friends they lose...the more pride they get in their heart that
they are serving God.....what a trip
If you thought about it id prolly have to bust your chops all day long for your sin.
But i havnt the time nor was i really called to do that. Wisdom is needed in every case
not just a flat out calling out on sin you think you see.