I disagree with your assertion that the QA community would be worse off if these types of people stopped answering questions. If a person cannot provide a helpf

I disagree with your assertion that the QA community would be worse off if these types of people stopped answering questions. If a person cannot provide a helpful response to a question without being condescending or rude, then I personally think the QA community would be better off if that person reduces the 'help' they are providing. Very few people have knowledge that is so rare and difficult to obtain that others should endure discouragement (or plain unpleasantness) in order to receive the benefit of their help. And, in my experience, the people who do have that sort of specialized knowledge are often some of the most helpful.