This post is absolutely correct, but ends with curious problem. As near as I can tell, King Solomon never specifically condemns calling someone names. Here are some references that provide decent lists of where the Bible does condemn Calling Someone Names.
Jesus condemned calling someone names.
Matthew 5:21-22 English Standard Version (ESV)
21 “You have heard that it was said to those of old, ‘You shall not murder; and whoever murders will be liable to judgment.’ 22 But I say to you that everyone who is angry with his brother will be liable to judgment; whoever insults his brother will be liable to the council; and whoever says, ‘You fool!’ will be liable to the hell of fire.
With fewer words (proverbs do that), King Solomon said something curiously similar.
Proverbs 12:16 English Standard Version (ESV)
16 The vexation of a fool is known at once,
but the prudent ignores an insult.
Yet that is not the verse Rudy u Martinka chose. Why? It seems he has a slight larger point in mind. Check it out.