Your opinions are born of american pop culture beliefs and not of the Bible and its traditions within the Church which is the context of your scenario.
The "shall not judge" quote is the free pass scripture for practicing evil for many. Yet they cast away the admonishions of the very same author(Paul typically) who gives a better context to scripture in other verses. The quotes below are directed at fellow brothers and sisters in Christ.
9I wrote unto you in an epistle not to company with fornicators:
10Yet not altogether with the fornicators of this world, or with the covetous, or extortioners, or with idolaters; for then must ye needs go out of the world.
11But now I have written unto you not to keep company, if any man that is called a brother be a fornicator, or covetous, or an idolator, or a railer, or a drunkard, or an extortioner; with such an one no not to eat.
12For what have I to do to judge them also that are without? do not ye judge them that are within?
13But them that are without God judgeth. Therefore put away from among yourselves that wicked person.
Romans 15
14 Now I myself am confident concerning you, my brethren, that you also are full of goodness, filled with all knowledge, able also to ''''admonish'''' one another.
2 Thessalonians 3
6 But we command you, brethren, in the name of our Lord Jesus Christ, that you withdraw from every brother who walks disorderly and not according to the tradition which he[a] received from us.
2 Thessalonians 3
13 But as for you, brethren, do not grow weary in doing good. 14 And if anyone does not obey our word in this epistle, note that person and do not keep company with him, that he may be ashamed. 15 Yet do not count him as an enemy, but admonish him as a brother.
2 Timothy 3
16 All Scripture is given by inspiration of God, and is profitable for doctrine, for reproof, for ''''''correction'''''', for instruction in righteousness, 17 that the man of God may be complete, thoroughly equipped for every good work.