This isn't restricted to open source project leaders, or even open source developers. You'll find the same childish elitism in pretty much every field of human endeavor. Programmers certainly do it. Laughing at noobs and being mean to them is pretty much the sole purpose of IRC, unless I'm mistaken. Surfers do it. Climbers do it. I've even seen rocket scientists do it. The interesting thing is watching which members…
People who feel need to pick on noobs who actually trying to learn are scum. There are noobs that do not want to learn or absorb new things, yeah torture them if you want. but if someone is genuinely working on something and you put them down..
As a noob climber I can see the jerk types, not because they pick on me (I am so horrible that I am not worth the time) but because of how they get people react in two different ways. Some kiss their ass and other just exclude them (silence when they start talking to their peers working on a problem, people need to leave etc)