If your idea of solid, worthy voluntary contribution is twats trolling forums with gatekeeping RTFM bullshit then your community isn't worth shit, brother.
The height of this attitude is best portrayed by ESR's essay here:
http://www.catb.org/~esr/faqs/smart-questions.html
There's a *lot* of attitude in there. It's easy to see how someone can be seduced by it because it depicts a position of superiority, but this is little to do with solving problems.
I see both ends of this. One of my work responsibilities is managing the level 1 Helpdesk people and I get their frustrations, but you can't let a few less motivated users set the tone for how you treat people, because this leads to. bad attitudes.