I'd like to give you some mod points, but since I don't have any at the moment...
I agree completely. I've seen too many comments that are only meant as insults or ridicule. These serve no constructive purpose.
If someone disagrees with another's point of view, they should be prepared to offer a clearly stated position based on facts or at least reasonably sound rationale. To simply offer insult and ridicule does nothing to expand our knowledge and understanding.
Actually, it really annoys me when Stallman or Linus resort to insults and ridicule. They should be above that type of behavior.
A good leader recognizes and appreciates everyones efforts to contribute to a project/cause. So they should respond in a mature, intelligent, and respectful manner.
This is based on my experiences from working on a psych ward for 18 months, as a Drill Instructor in the Army, as a coach for boys' baseball, basketball, and soccer, and as a department manager for 15+ years. I was always rewarded with enthusiastic cooperation, loyalty, and respect.