We have all sinned and fallen short of the glory of God.
I believe the gripe is the hypocrisy. Getting blasted because you don't tow the line of standards and judged for that, then said person breaks a commandment and their peers are "disappointed" in them, but not judged? That's what gets old.
I have sinned. I do not take pleasure in sending others to hell for their behavior. I never want to be a hypocrite.