Well to say the anger and frustration that is inherent in a rude or angry response would be to invalidate another persons strong feelings on the matter, feelings which may have a righteous base.
To answer the question with a slightly different twist-
"Is abusive and angry langauge a helpful response to the things we take issue with or have a passionate dislike or low tolerance for, or have negative experiences to?"
Abusive language and such makes it very difficult to see the issue more clearly or rationally.
It adds fuel to the emotional fire while simultaneously putting out sparks of reason, which rarely (if ever?) solves anything or contributes to understanding.